U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject Euphorbia pulcherrima Remove constraint Subject: Euphorbia pulcherrima
Start Over

Search

294  Search Results

« Previous | 1 - 50 of 294 |
Number of results to display per page

Search Results

1. Association of tomato yellow leaf curl virus — Oman strain with the leaf curl and yellow mosaic symptoms on papaya and wild poinsettia in Oman

Author:
Q. M. I. Haq; S. S. Sohrab; J. K. Brown; A. Al-Harrasi
Source:
Canadian journal of plant pathology 2022 v.44 no.3 pp. 465-472
ISSN:
1715-2992
Subject:
Bemisia tabaci; Betasatellite (genus); Carica papaya; DNA; Euphorbia pulcherrima; Tomato yellow leaf curl virus; genome; host plants; leaf curling; leaves; nucleotide sequences; phylogeny; plant pathology; sequence analysis; Iran; Oman; Saudi Arabia; Sudan
Abstract:
... Begomoviruses (Geminiviridae) cause severe diseases in several crops, often causing significant losses due to reduced yield and quality. These viruses are easily transmitted by the whitefly (Bemisia tabaci) vector. Begomovirus-like symptoms were observed in wild poinsettia (Euphorbia cyathophora) and cultivated papaya (Carica papaya) plants in the Nizwa, Al-Dakhliya and Al-Batinah regions of Oman, ...
DOI:
10.1080/07060661.2021.1995500

2. Biology and life table of Eotetranychus lewisi (Acari: Tetranycidae) on Prunus persica cultivars from the Ecuadorian Andean region

Author:
César Miño; Rita Santana; Olguer León; Yelitza Colmenárez; Adriana Villa-Murillo; Carlos Vásquez
Source:
International journal of acarology 2022 v.48 no.3 pp. 275-278
ISSN:
1945-3892
Subject:
Eotetranychus; Euphorbia pulcherrima; Prunus persica; acarology; adulthood; adults; cultivars; eggs; fecundity; females; life tables; longevity; mites; peaches; pests; Andes region; Ecuador
Abstract:
... Eotetranychus lewisi (McGregor) is an important pest mite found in peach crops. This pest has recently been reported in the province of Tungurahua, Ecuador, little information is available. The biology and life table of E. lewisi using three peach cultivars (Zapallo, Blanco Abridor, and Tejón) was evaluated under laboratory conditions (19°C, 45% R.H., and 12:12 L.D). Mites were collected from Euph ...
DOI:
10.1080/01647954.2022.2060305

3. Changes in Fungal and Oomycete Community Composition Following Irrigation Reductions Aimed at Increasing Water Use Efficiency in a Containerized Nursery Crop

Author:
Johanna Del Castillo Múnera; Amisha T. Poret-Peterson; Cassandra L. Swett
Source:
Phytobiomes journal 2022 v.6 no.3 pp. 247-260
ISSN:
2471-2906
Subject:
DNA barcoding; Euphorbia pulcherrima; Fusarium; Phoma; Phytophthora; Plectosphaerella; community structure; drought tolerance; fungal communities; fungi; health status; irrigation; phytobiome; rhizosphere; root rot; volumetric water content; water shortages; water use efficiency
Abstract:
... Ornamental production in the United States spans an estimated 267,000 ha and uses approximately 169,000 m³ of water yearly. Ornamental growers, particularly those with air-closed systems, are interested in implementing reduced irrigation technologies such as sensor-controlled irrigation systems to improve water use efficiency in response to water scarcity. To evaluate phytobiome impacts, we utiliz ...
DOI:
10.1094/PBIOMES-09-21-0058-R

4. First Report of Root-Knot Nematode Meloidogyne enterolobii on Poinsettia ‘Luv U Pink’ in Taiwan

Author:
C.-C. Liang; P. J. Chen
Source:
Plant disease 2022 v.106 no.6 pp. 1764
ISSN:
0191-2917
Subject:
Euphorbia pulcherrima; European Union; Meloidogyne enterolobii; body length; females; genes; greenhouses; haplotypes; morphometry; phylogeny; root-knot nematodes; sequence analysis; stylets; tail; China; Guatemala; Mexico; Taiwan
Abstract:
... Poinsettias (Euphorbia pulcherrima Willd. ex Klotzsch.) originated in southern Mexico and northern Guatemala and are the most valuable potted flowering plant in the spurge family (Euphorbiaceae). The European Union and the United States are the two biggest poinsettia markets (Taylor et al. 2011), with a wholesale value of $153 million in the United States in 2019. Root-knot galls of the poinsettia ...
DOI:
10.1094/PDIS-09-21-1899-PDN

5. Synthesis of Tyrosol 1,2,3-Triazole Derivatives and Their Phytotoxic Activity against Euphorbia heterophylla

Author:
Cristiane Aparecida Franco; Toshik Iarley da Silva; Marlon Gomes Dias; Bruno Wesley Ferreira; Bianca Lana de Sousa; Guilherme Mateus Bousada; Robert Weingart Barreto; Boniek Gontijo Vaz; Gesiane da Silva Lima; Marcelo Henrique dos Santos; José Antônio Saraiva Grossi; Eduardo Vinícius Vieira Varejão
Source:
Journal of agricultural and food chemistry 2022 v.70 no.9 pp. 2806-2816
ISSN:
1520-5118
Subject:
Commelina benghalensis; Erigeron sumatrensis; Euphorbia heterophylla; Euphorbia pulcherrima; carbon; chlorophyll; copper; cycloaddition reactions; diquat; food chemistry; necrosis; photosynthesis; phytotoxicity; stomatal conductance; water use efficiency; weed control; weeds
Abstract:
... The synthesis and phytotoxic activity of a series of tyrosol 1,2,3-triazole derivatives are reported herein. Target compounds were synthesized through the copper(I)-catalyzed azide-alkyne cycloaddition reaction (CuAAC), known as click reaction, and these were tested for phytotoxic activity on leaves of wild poinsettia (Euphorbia heterophylla), fleabane (Conyza sumatrensis), and tropical spiderwort ...
DOI:
10.1021/acs.jafc.1c06012

6. Adding a Natural Enemy to Respond to Pest Immigration and Delayed Natural Enemy Releases in Augmentative Biological Control

Author:
Erfan K. Vafaie; H. Brent Pemberton; Mengmeng Gu; David Kerns; Micky D. Eubanks; Kevin M. Heinz
Source:
Environmental entomology 2021 v.50 no.3 pp. 561-570
ISSN:
0046-225X
Subject:
Amblyseius swirskii; Bemisia tabaci; Eretmocerus eremicus; Euphorbia pulcherrima; biological control; entomology; greenhouses; immigration; natural enemies; pests; sweet potatoes
Abstract:
... Whether increased natural enemy density or adding a second natural enemy species will provide superior pest suppression in greenhouse augmentative biological control is unknown for many commercially available natural enemy species. In this study, we use sweetpotato whiteflies, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), on poinsettias, Euphorbia pulcherrima Willd. ex Klotzsch (Malpighiale ...
DOI:
10.1093/ee/nvab007

7. Biological Cycle of the Fungus Gnat Bradysia sp.¹ in a Lily (Lilium spp.) Crop

Author:
Florinda García-Pérez; Jaime Dorantes-Jiménez; César Sánchez-Hernández; Sofía Ivet Soto-García; Evert Villanueva-Sánchez
Source:
Southwestern entomologist 2021 v.46 no.4 pp. 971-976
ISSN:
0147-1724
Subject:
Agave; Bradysia; Euphorbia pulcherrima; Lilium; adults; eggs; entomologists; forests; fungi; fungus gnats; larvae; ornamental plants; oviposition; pupae; relative humidity; Mexico
Abstract:
... Bradysia sp. Frey, 1948 (Diptera: Sciaridae) damages mostly ornamentals, vegetables, and Agave spp. in greenhouses and nurseries. In Mexico, study has been infrequent, and only the identity of species of fungus gnats associated with crops of poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch) and forest nurseries has been reported. To contribute to knowledge of the species, an experiment was don ...
DOI:
10.3958/059.046.0418

8. Development of a multiplex amplicon‐sequencing assay to detect low‐frequency mutations in poinsettia (Euphorbia pulcherrima) breeding programmes

Author:
Vinicius Vilperte; Robert Boehm; Thomas Debener
Source:
Plant breeding 2021 v.140 no.3 pp. 497-507
ISSN:
0179-9541
Subject:
Euphorbia pulcherrima; anthocyanins; color; container-grown plants; homozygosity; mutants; mutation; vacuoles
Abstract:
... Poinsettia is an economically important ornamental potted plant in which certain bract colour variants are often obtained by mutation breeding. Previously, in poinsettia, we identified Bract1, a GST gene involved in the sequestration and transport of anthocyanins to the vacuole. This gene carries a short, highly mutable 4‐bp repeat in its coding region. Loss of one repeat unit leads to a loss of f ...
DOI:
10.1111/pbr.12925

9. Efficacy of Selected Insecticides as Replacement for Neonicotinoids in Managing Sweetpotato Whitefly on Poinsettia

Author:
Gunbharpur Singh Gill; Juang Horng Chong
Source:
HortTechnology 2021 v.31 no.6 pp. 745-752
ISSN:
1943-7714
Subject:
Bemisia tabaci; Euphorbia pulcherrima; adults; cyantraniliprole; dinotefuran; flonicamid; foliar spraying; imidacloprid; sulfoxaflor; sweet potatoes
Abstract:
... Management of sweetpotato whitefly (Bemisia tabaci), one of the most economically important pests of poinsettia (Euphorbia pulcherrima), relies heavily on neonicotinoid insecticides. Growers are seeking insecticide alternatives to neonicotinoids due to market demands. Although several systemic and translaminar insecticides have been suggested as alternatives to neonicotinoids, no published study h ...
DOI:
10.21273/HORTTECH04853-21

10. Evaluating Fungicide Selections to Manage Pythium Root Rot on Poinsettia Cultivars with Varying Levels of Partial Resistance

Author:
Emma C. Lookabaugh; James P. Kerns; Barbara B. Shew
Source:
Plant disease 2021 v.105 no.6 pp. 1640-1647
ISSN:
0191-2917
Subject:
Euphorbia pulcherrima; Pythium aphanidermatum; Trichoderma; azoxystrobin; cultivars; cyazofamid; etridiazole; fenamidone; greenhouses; mefenoxam; mycelium; potassium phosphite; propamocarb; pyraclostrobin; quinones; root rot; sanitation; North Carolina
Abstract:
... Pythium aphanidermatum is the predominant species causing Pythium root rot of commercially grown poinsettia (Euphorbia pulcherrima Willd. ex Kotzch) in North Carolina. Pythium root rot is managed primarily through a combination of sanitation practices and preventative fungicide applications of mefenoxam or etridiazole. Insensitivity to mefenoxam is common but growers continue to rely on it from la ...
DOI:
10.1094/PDIS-04-20-0807-RE

11. First Report of a ‘Candidatus Phytoplasma pruni’-Related Strain Associated with Commercial Poinsettias in Canada

Author:
Y. Arocha Rosete; R. Michelutti; J. A. Scott
Source:
Plant disease 2021 v.105 no.10 pp. 3287
ISSN:
0191-2917
Subject:
Candidatus Phytoplasma pruni; Euphorbia pulcherrima; Poinsettia latent virus; Poinsettia mosaic virus; Prunus persica; Trillium; Vitis; cherries; computer simulation; cultivars; flowers; gardens; genes; leaf area; peptide elongation factors; pests; phylogeny; quarantine; restriction fragment length polymorphism; risk; sequence analysis; Italy; Korean Peninsula; Ontario
Abstract:
... The poinsettia, Euphorbia pulcherrima Willd. Ex Klotzsch (family Euphorbiaceae) is the second-largest potted ornamental crop in Canada; approximately 4.2 million pots per year are grown in Ontario greenhouses (Agriculture and Agri-Food Canada 2020). Their commercially popular compact appearance is due to a branch-inducing factor, the PoiBI phytoplasma (Lee et al. 1995). Millions of potted poinsett ...
DOI:
10.1094/PDIS-03-21-0504-PDN

12. First genome edited poinsettias: targeted mutagenesis of flavonoid 3′-hydroxylase using CRISPR/Cas9 results in a colour shift

Author:
Daria Nitarska; Robert Boehm; Thomas Debener; Rares Calin Lucaciu; Heidi Halbwirth
Source:
Plant cell, tissue, and organ culture 2021 v.147 no.1 pp. 49-60
ISSN:
0167-6857
Subject:
CRISPR-Cas systems; Euphorbia pulcherrima; anthocyanins; color; cultivars; cyanidin; enzymes; gene editing; genes; organ culture; pelargonidin; site-directed mutagenesis
Abstract:
... The CRISPR/Cas9 system is a remarkably promising tool for targeted gene mutagenesis, and becoming ever more popular for modification of ornamental plants. In this study we performed the knockout of flavonoid 3′-hydroxylase (F3′H) with application of CRISPR/Cas9 in the red flowering poinsettia (Euphorbia pulcherrima) cultivar ‘Christmas Eve’, in order to obtain plants with orange bract colour, whic ...
DOI:
10.1007/s11240-021-02103-5

13. Phytoremediation of potentially toxic elements in a polluted industrial soil using Poinsettia

Author:
Fangmeng Xiao; Zhanying Gu; Arbi Sarkissian; Yaxin Ji; RuonanYang; Ling Yang; Qingyang Zeng; Peng Huang; Hanyue Chen
Source:
Physiology and molecular biology of plants 2021 v.27 no.4 pp. 675-686
ISSN:
0971-5894
Subject:
Euphorbia pulcherrima; bioaccumulation factor; experimental design; hyperaccumulators; molecular biology; physiology; phytoremediation; pollution; toxicity; China
Abstract:
... Potentially toxic elements (PTEs) pollution has become a serious environmental threat, particularly in developing countries such as China. In response, there is a growing interest in phytoremediation studies to identify plant species as designated hyperaccumulators of PTEs in polluted soils. Poinsettia was selected as a candidate species for phytoremediation of six PTEs (Zn, Pb, Hg, Cr, As, Cu) in ...
DOI:
10.1007/s12298-021-00980-w

14. Plants and zootoxins: Toxico-epidemiological investigation in domestic animals

Author:
Alessia Bertero; Franca Davanzo; Marina Rivolta; Cristina Cortinovis; Anita Vasquez; Angelo Le Mura; Asja Masuelli; Francesca Caloni
Source:
Toxicon 2021 v.196 pp. 25-31
ISSN:
0041-0101
Subject:
Bufo bufo; Cycas revoluta; Euphorbia pulcherrima; Hydrangea macrophylla; Salamandra salamandra; Scyphozoa; Thaumetopoea pityocampa; Vipera; dogs; epidemiological studies; salamanders and newts; toads; Italy
Abstract:
... An epidemiological study on animal poisoning due to plants and zootoxins has been carried out by the Poison Control Centre of Milan (CAV) in collaboration with the University of Milan (Italy). During the period January 2015–March 2019, the CAV received 932 calls on animal poisonings, 12.66% (n = 118) of which were related to plants and zootoxins. Among these, 95 enquiries (80.51%) concerned exposu ...
DOI:
10.1016/j.toxicon.2021.03.019

15. Seasonal Occurrence and Reproductive Suitability of Weed Hosts for Sweetpotato Whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae), in South Georgia

Author:
Apurba K. Barman; Phillip M. Roberts; Eric P. Prostko; Michael D. Toews
Source:
Journal of entomological science 2021 v.57 no.1 pp. 1-11
ISSN:
0749-8004
Subject:
Acanthospermum hispidum; Amaranthus palmeri; Ambrosia artemisiifolia; Bemisia tabaci; Euphorbia heterophylla; Euphorbia pulcherrima; Ipomoea cordatotriloba; Ipomoea quamoclit; Jacquemontia tamnifolia; Lamium amplexicaule; Melochia corchorifolia; Raphanus raphanistrum; Richardia scabra; Sida spinosa; Verbena bonariensis; agricultural landscapes; radishes; Georgia
Abstract:
... South Georgia represents an area of intensive agricultural production where cultivated crops serve as hosts of the sweetpotato whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), throughout the year. In addition to cultivated hosts, there are numerous weed species present in the agricultural landscape that are undoubtedly responsible for supporting B. tabaci population development. This s ...
DOI:
10.18474/JES20-94

16. Variability of Phytoplasma Infection Density in Poinsettia and Evaluation of its Association with the Level of Branching in Host Plants

Author:
Shin Lee; Chien-Young Chu; Chia-Ching Chu
Source:
Plant disease 2021 v.105 no.05 pp. 1539-1545
ISSN:
0191-2917
Subject:
Euphorbia pulcherrima; ecology; pathogens; phenotype; phytoplasmal diseases; quantitative polymerase chain reaction; sequence analysis; vegetative growth
Abstract:
... It has long been established that phytoplasma infection is the cause of the free-branching phenotype in poinsettia. However, relatively little is known about the ecology of the pathogen in planta. The present study evaluated the infection pattern of poinsettia branch-inducing phytoplasma (PoiBI) and its association with the poinsettia phenotype during cutting propagation. The presence of this path ...
DOI:
10.1094/PDIS-10-20-2304-RE

17. Agricultural sustainability estimation of the European photovoltaic greenhouses

Author:
Marco Cossu; Akira Yano; Stefania Solinas; Paola A. Deligios; Maria Teresa Tiloca; Andrea Cossu; Luigi Ledda
Source:
European journal of agronomy 2020 v.118 pp. 126074
ISSN:
1161-0301
Subject:
Euphorbia pulcherrima; agronomy; alternative crops; canopy; crop production; cucumbers; energy; farms; floriculture; greenhouses; precision agriculture; supplementary lighting; sustainable agriculture; sweet peppers; tomatoes; Southern European region
Abstract:
... The integration of the photovoltaic (PV) energy in the greenhouse farm has raised concerns on the agricultural sustainability of this specific agrosystem in terms of crop planning and management, due to the shading cast by the PV panels on the canopy. The PV greenhouse (PVG) can be classified on the basis of the PV cover ratio (PVR), that is the ratio of the projected area of PV panels to the grou ...
DOI:
10.1016/j.eja.2020.126074

18. Anthocyanin accumulation in poinsettia leaves and its functional role in photo-oxidative stress

Author:
Julietta Moustaka; Georgia Tanou; Anastasia Giannakoula; Ioannis-Dimosthenis S. Adamakis; Emmanuel Panteris; Eleftherios P. Eleftheriou; Michael Moustakas
Source:
Environmental and experimental botany 2020 v.175 pp. 104065
ISSN:
0098-8472
Subject:
Euphorbia pulcherrima; anthocyanins; antioxidant activity; ascorbate peroxidase; chloroplasts; electrons; hydrogen peroxide; leaves; oxygen; paraquat; photochemistry; photosystem I; photosystem II; radiation resistance; superoxide anion; superoxide dismutase
Abstract:
... The role of anthocyanin accumulation in poinsettia leaves exposed to photo-oxidative stress was evaluated by comparing green (anthocyanin less) and reddish (anthocyanin well equipped) leaves, co-occurring in poinsettia (Euphorbia pulcherrima Willd. ex Klotzsch). For the assessment we compared the photoprotective and antioxidant mechanisms in the two leaf types in response to photo-oxidative stress ...
DOI:
10.1016/j.envexpbot.2020.104065

19. Arg-128-Leu Target-Site Mutation in PPO2 Evolves in Wild Poinsettia (Euphorbia heterophylla) with Cross-Resistance to PPO-Inhibiting Herbicides

Author:
Rafael R. Mendes; Hudson K. Takano; Fernando S. Adegas; Rubem S. Oliveira; Todd A. Gaines; Franck E. Dayan
Source:
Weed science 2020 v.68 no.5 pp. 437-444
ISSN:
0043-1745
Subject:
Ambrosia artemisiifolia; Euphorbia heterophylla; Euphorbia pulcherrima; active sites; at-risk population; broadleaf weeds; chloroplasts; cross resistance; cytochrome P-450; dose response; hydrogen peroxide; lactofen; malathion; mitochondria; models; protoporphyrin; protoporphyrinogen oxidase; pyraflufen ethyl; saflufenacil; single nucleotide polymorphism; site-directed mutagenesis; Brazil
Abstract:
... Wild poinsettia (Euphorbia heterophylla L.) is a troublesome broadleaf weed in grain production areas in South America. Herbicide resistance to multiple sites of action has been documented in this species, including protoporphyrinogen oxidase (PPO) inhibitors. We investigated the physiological and molecular bases for PPO-inhibitor resistance in a E. heterophylla population (RPPO) from Southern Bra ...
DOI:
10.1017/wsc.2020.42

20. Developing a Water-stress Index for Potted Poinsettia Production

Author:
Lloyd L. Nackley; Elias Fernandes de Sousa; Bruno J.L. Pitton; Jared Sisneroz; Lorence R. Oki
Source:
HortScience 2020 v.55 no.8 pp. 1295-1302
ISSN:
2327-9834
Subject:
Euphorbia pulcherrima; agricultural runoff; fertilizers; floriculture; greenhouses; heat; industry; pesticides; plant growth; pollution; sap flow; soil water; transpiration; water content; water stress
Abstract:
... Potted poinsettia (Euphorbia pulcherrima) is an important commercial commodity for the U.S. floriculture industry. The production of poinsettia demands intensively managed light control, heat, fertilizer, and water; inhibiting elongation with plant growth regulators, and protecting plants from diseases and pests with pesticide applications. Excessive irrigation creates pollution, promotes disease, ...
DOI:
10.21273/HORTSCI14914-20

21. Evaluation of the bacteria formulation different inoculum densities on growth and development of Euphorbia pulcherrima

Author:
Fazilet Parlakova Karagöz
Source:
Folia horticulturae 2020 v.32 no.2 pp. 179-188
ISSN:
2083-5965
Subject:
Bacillus megaterium; Euphorbia pulcherrima; Kluyvera cryocrescens; Pantoea agglomerans; bacteria; bracts; container-grown plants; diameter; enzyme activity; flowers; glutamate-ammonia ligase; greenhouses; growth and development; horticulture; leaf area; leaves; length; materials; nitrate reductase; plant development; plant height; research; rhizosphere; root cuttings; solutions; strains; suspensions; total nitrogen; water; weight; width
Abstract:
... This research was carried out to examine the effects of different doses of bacterial formulation comprised of a mixture of Bacillus megaterium TV-91C, Pantoea agglomerans RK-92 and Kluyvera cryocrescens TV-113C strains on the plant development and bract quality of poinsettias (Euphorbia pulcherrima Willd. ex Klotzsch), which are one of the most important potted plants grown for their fleshy bracts ...
DOI:
10.2478/fhort-2020-0017

22. First Report of Bacterial Hollow Stalk Caused by Dickeya chrysanthemi (syn. Erwinia chrysanthemi) on Tobacco in Nanping, China

Author:
W. Lin; J. Y. Liu; Y. X. Feng; S. C. Zhang; Q. Zhao; Q. Lin; J. Wang
Source:
Plant disease 2020 v.104 no.12 pp. 3248
ISSN:
0191-2917
Subject:
DNA-directed DNA polymerase; Erwinia chrysanthemi; Euphorbia pulcherrima; Nicotiana tabacum; Pectobacterium; agar; ambient temperature; bacteria; computer software; cultivars; databases; harvest date; leaves; pathogenicity; pathogens; pigmentation; recombinases; sodium hypochlorite; summer; tobacco; China; Cuba
Abstract:
... Tobacco, Nicotiana tabacum L., family Solanaceae, is grown for its leaves (mature period). It originated in the Mesoamericas but today is cultivated globally. China produces about one-third of the world’s supply of tobacco leaves and is the largest tobacco producer in the world (Hu et al. 2007). In the early summer of 2019, after tobacco was topped, typical tobacco hollow stalk disease symptoms we ...
DOI:
10.1094/PDIS-06-20-1305-PDN

23. First Report of Bougainvillea Floral Bract Proliferation Disease in Cuba and Its Association with Phytoplasmal Infection

Author:
W. Wei; E. Pérez-López; Y. Zhao
Source:
Plant disease 2020 v.104 no.3 pp. 967
ISSN:
0191-2917
Subject:
Aster yellows phytoplasma; Bougainvillea glabra; Candidatus Phytoplasma asteris; Euphorbia pulcherrima; bracts; branching; cetyltrimethylammonium bromide; flowers; gardens; genes; hybrids; intergenic DNA; leaves; lianas; loci; morphs; nucleotide sequences; oligodeoxyribonucleotides; ornamental plants; phytoplasmal diseases; polymerase chain reaction; ribosomal DNA; ribosomal RNA; ribosomal proteins; sequence homology; temperate zones; Brazil; Cuba; India
Abstract:
... Bougainvillea is a genus of evergreen woody climbers or bushes native to South America. The plants in the genus often produce multiple inflorescences consisting of sepal-like bracts and waxy flowers. Being popular ornamental plants, bougainvilleas are widely cultivated in tropical, subtropical, and temperate areas around the world. Bougainvillea × buttiana refers to a variety of garden hybrids of ...
DOI:
10.1094/PDIS-09-19-2052-PDN

24. First Report of Poinsettia Wilt Caused by Amphobotrys ricini (syn. Botryotinia ricini) in Florida

Author:
Charles Krasnow; Ana Maria Bocsanczy; Lee Bloomcamp; David Norman
Source:
Plant disease 2020 v.104 no.11 pp. 3064
ISSN:
0191-2917
Subject:
Botryotinia; Botrytis cinerea; DNA; Euphorbia milii; Euphorbia pulcherrima; RNA; agar; castor beans; conidia; conidiophores; culture media; disease severity; ethanol; genes; glucose; glyceraldehyde; greenhouses; heat shock proteins; mycelium; pathogenicity; pathogens; sclerotia; stem rot; strawberries; Florida; Louisiana
Abstract:
... Poinsettia (Euphorbia pulcherrima) plants exhibiting wilt symptoms were observed in two large research greenhouses at the University of Florida, Gainesville, in 2019. Disease symptoms were observed on a limited number (<5%) of plants during a period of high temperatures, and diseased plants had continuously been rogued during the growing season. Shoots of symptomatic plants were wilting with branc ...
DOI:
10.1094/PDIS-04-20-0891-PDN

25. Fitness Cost of Imazamox Resistance in Wild Poinsettia (Euphorbia heterophylla L.)

Author:
Saeid Hassanpour-bourkheili; Mahtab Heravi; Javid Gherekhloo; Ricardo Alcántara-de la Cruz; Rafael De Prado
Source:
Agronomy 2020 v.10 no.12 pp. -
ISSN:
2073-4395
Subject:
Euphorbia heterophylla; Euphorbia pulcherrima; acetolactate synthase; agronomy; biotypes; early development; herbicide resistance; homozygosity; imazamox; leaf area; leaves; mutation; net assimilation rate; plant height; planting; seeds; shoots; soybeans; specific leaf area; stems; weeds; weight; Brazil
Abstract:
... Wild poinsettia (Euphorbia heterophylla L.) is a difficult-to-control weed in soybean production in Brazil that has developed resistance to herbicides, including acetolactate synthase inhibitors. We investigated the potential fitness cost associated to the Ser-653-Asn mutation that confers imazamox resistance in this weed. Plant height, leaf and stem dry weight, leaf area and seed production per p ...
DOI:
10.3390/agronomy10121859

26. Investigation of the effect of day length through black cloth treatment on flowering of potted poinsettia (Euphorbia pulcherima Willd. ex Klotzsch) and evaluation of its longevity under indoor conditions

Author:
D. P. Karunananda; S. E. Peiris
Source:
Acta horticulturae 2020 v. no.1278 pp. 211-218
ISSN:
0567-7572
Subject:
Euphorbia pulcherrima; color; floriculture; flowering; industry; longevity; photoperiod
Abstract:
... In the introduction of poinsettia (Euphorbia pulcherima Willd. ex Klotzsch) as a novel pot plant to Sri Lankan floriculture industry, artificial induction of flowers under long day conditions (off season) is necessary for it to produce marketable plants throughout the year. In this study, feasibility of force blooming during off season was investigated by subjecting vegetative plants to black clot ...
DOI:
10.17660/ActaHortic.2020.1278.31

27. Nutritional Relationship between Bemisia tabaci and Its Primary Endosymbiont, Portiera aleyrodidarum, during Host Plant Acclimation

Author:
Fang-Yu Hu; Chi-Wei Tsai
Source:
Insects 2020 v.11 no.8 pp. -
ISSN:
2075-4450
Subject:
Bemisia tabaci; Brassica oleracea var. alboglabra; Euphorbia pulcherrima; Gossypium; Rickettsia; Solanum lycopersicum; acclimation; biosynthesis; cotton; cucumbers; diet; endosymbionts; essential amino acids; fecundity; genes; host plants; nutrients; tomatoes
Abstract:
... Plant sap-sucking insects commonly have established mutualistic relationships with endosymbiotic bacteria that can provide nutrients lacking in their diet. Bemisia tabaci harbors one primary endosymbiont, Portiera aleyrodidarum, and up to seven secondary endosymbionts, including Hamiltonella defensa and Rickettsia sp. Portiera aleyrodidarum is already known to play a critical role in providing nec ...
DOI:
10.3390/insects11080498

28. Phosphorus restriction influences P efficiency and ornamental quality of poinsettia and chrysanthemum

Author:
Siri Caspersen; Karl-Johan Bergstrand
Source:
Scientia horticulturae 2020 v.267 pp. 109316
ISSN:
0304-4238
Subject:
Chrysanthemum; Euphorbia pulcherrima; biomass production; flowers; horticultural crops; nutrient solutions; phosphorus; phosphorus fertilizers; phytomass; plant growth; plant height; rock phosphate
Abstract:
... Better synchronization of plant-available phosphorus (P) with crop P requirement is required to reduce P losses to the environment and to improve resource-efficiency of the exploitation of non-renewable phosphate rock. In horticultural plant production, a restricted availability of P may limit stem length and improve compactness, which are desirable characters for many ornamental plants. In the pr ...
DOI:
10.1016/j.scienta.2020.109316

29. Risk of Spreading Soft Rot Through Cutting Dips Against Whiteflies in Greenhouse-Grown Poinsettia

Author:
Rosemarije Buitenhuis; Anissa Poleatewich; Mark Jandricic; Michael Brownbridge
Source:
Plant disease 2020 v.104 no.8 pp. 2262-2268
ISSN:
0191-2917
Subject:
Aleyrodidae; Euphorbia pulcherrima; Pectobacterium carotovorum subsp. carotovorum; cost effectiveness; cross contamination; cutting; dipping; disease incidence; greenhouses; growing media; inoculum; insect infestations; insect pests; insecticidal soaps; laboratory experimentation; ornamental plants; pathogens; risk; sanitation
Abstract:
... Dipping is a quick and cost-effective technique to reduce pest infestations on unrooted cuttings of greenhouse ornamental crops. Large numbers of cuttings are immersed in an insecticidal treatment, e.g., biopesticides and/or insecticidal soap, before they are stuck in the growing medium and rooted. This research investigated the risk of cross-contamination of poinsettia cuttings with Pectobacteriu ...
DOI:
10.1094/PDIS-12-19-2632-RE

30. Silicon Alleviates Temperature Stresses in Poinsettia by Regulating Stomata, Photosynthesis, and Oxidative Damages

Author:
Jiangtao Hu; Yali Li; Byoung Ryong Jeong
Source:
Agronomy 2020 v.10 no.9 pp. -
ISSN:
2073-4395
Subject:
Euphorbia pulcherrima; cold stress; epicuticular wax; heat stress; hydrogen sulfide; malondialdehyde; photosynthesis; plant cuttings; silicon; stomata; stomatal movement; temperature
Abstract:
... The effects of silicon (Si) on temperature stresses were investigated in poinsettia. Well-rooted cuttings supplemented with and without Si were exposed to 40 °C, and plants treated with or without Si during cutting propagation and cultivation were subjected to 4 °C. The results showed that almost all the stomata of cuttings without Si supplementation were closed, while some of them were still open ...
DOI:
10.3390/agronomy10091419

31. Survey of Bemisia tabaci (Hemiptera: Aleyrodidae) in Agricultural Ecosystems in Georgia

Author:
Cindy L. McKenzie; Alton N. Sparks; Phillip Roberts; Ronald D. Oetting; Lance S. Osborne
Source:
Journal of entomological science 2020 v.55 no.2 pp. 163-170
ISSN:
0749-8004
Subject:
Bemisia tabaci; Chrysanthemum morifolium; Euphorbia pulcherrima; agroecosystems; biotypes; cantaloupes; corn; cotton; cowpeas; cryptic species; cucumbers; eggplants; green beans; greenhouses; host plants; kale; nursery crops; ornamental plants; peanuts; pepper; pests; soybeans; surveys; sweet potatoes; tomatoes; zucchini; Georgia; Wisconsin
Abstract:
... Bemisia tabaci (Gennaduis) is a large complex of cryptic species whose members are invasive pests of economically important commodities, including cotton, vegetables, and ornamental crops. A new state detection of Mediterranean (MED; biotype Q) whitefly on poinsettia from a commercial greenhouse was made in Wisconsin in July 2018, bringing the total positive MED whitefly states to 27, indicating t ...
DOI:
10.18474/0749-8004-55.2.163

32. A Trp574Leu Target-Site Mutation Confers Imazamox Resistance in Multiple Herbicide-Resistant Wild Poinsettia Populations from Brazil

Author:
Rafael R. Mendes; Hudson K. Takano; Rubem S. Oliveira; Fernando S. Adegas; Todd A. Gaines; Franck E. Dayan
Source:
Agronomy 2020 v.10 no.8 pp. -
ISSN:
2073-4395
Subject:
Euphorbia heterophylla; Euphorbia pulcherrima; acetolactate synthase; alleles; biomass; dose response; enzyme activity; enzyme inhibitors; evolution; genotyping; glyphosate; herbicide resistance; imazamox; protoporphyrinogen oxidase; site-directed mutagenesis; weeds; Brazil
Abstract:
... Wild poinsettia (Euphorbia heterophylla L.) is an important weed species in southern Brazil, especially due to the evolution of multiple herbicide resistance (e.g., acetolactate synthase (ALS)- inhibitors, protoporphyrinogen oxidase inhibitors, and glyphosate). The mechanism of resistance to imazamox was investigated in two wild poinsettia populations (R1 and R2) from southern Brazil and compared ...
DOI:
10.3390/agronomy10081057

33. Whitefly Abundance on Rooted Poinsettia Cuttings and Finished Poinsettias

Author:
Erfan K. Vafaie; H. Brent Pemberton; Mengmeng Gu; David Kerns; Micky D. Eubanks; Kevin M. Heinz
Source:
HortTechnology 2020 v.30 no.4 pp. 486-491
ISSN:
1063-0198
Subject:
Aleyrodidae; Euphorbia pulcherrima; greenhouses; immatures; integument
Abstract:
... In this study, we surveyed the initial whitefly (Aleyrodidae) populations on rooted poinsettia (Euphorbia pulcherrima) cuttings at two commercial greenhouse facilities in both 2017 and 2018 to determine the initial whitefly population at the beginning of poinsettia production and surveyed finished poinsettias at multiple retailers in Tyler, TX, over 2 years to determine whitefly densities consider ...
DOI:
10.21273/HORTTECH04532-19

34. The omnivorous predator Macrolophus pygmaeus, a good candidate for the control of both greenhouse whitefly and poinsettia thrips on gerbera plants

Author:
Ada Leman; Barbara L. Ingegno; Luciana Tavella; Arne Janssen; Gerben J. Messelink
Source:
Insect science 2020 v.27 no.3 pp. 510-518
ISSN:
1672-9609
Subject:
Echinothrips americanus; Euphorbia pulcherrima; Gerbera; Macrolophus; Trialeurodes vaporariorum; biological control; greenhouse experimentation; herbivores; olfactometers; omnivores; ornamental plants; pest control; pests; predatory insects; reproduction; vegetables
Abstract:
... The poinsettia thrips Echinothrips americanus Morgan is a relatively new pest that has spread rapidly worldwide and causes serious damage in both vegetable and ornamental plants. In this study, we investigated if and how effective this pest can be controlled in gerbera by the omnivorous predator Macrolophus pygmaeus (Rambur). Because herbivores on plants can interact through a shared predator, we ...
DOI:
10.1111/1744-7917.12655
PubMed:
30549212
PubMed Central:
PMC7217019

35. Enabling adaptation to water scarcity: Identifying and managing root disease risks associated with reducing irrigation inputs in greenhouse crop production – A case study in poinsettia

Author:
Johanna Del Castillo Múnera; Bruk Belayneh; Andrew Ritsvey; Emmi E. Koivunen; John Lea-Cox; Cassandra L. Swett
Source:
Agricultural water management 2019 v.226 no. pp. -
ISSN:
0378-3774
Subject:
Euphorbia pulcherrima; Pythium aphanidermatum; case studies; greenhouse experimentation; greenhouses; growers; irrigation rates; nursery crops; plant growth-promoting rhizobacteria; plant pathogens; risk; root rot; roots; volumetric water content; water conservation; water shortages; water stress; water use efficiency
Abstract:
... Greenhouse and nursery growers consume up to 19 thousand gallons of water per acre per day. Implementation of water conservation technologies to mitigate water resource depletion is imperative but recent studies indicate that associated drought stress may enhance losses from root diseases. The overall objective of this study was to evaluate and manage disease risks associated with reducing irrigat ...
DOI:
10.1016/j.agwat.2019.105737
CHORUS:
10.1016/j.agwat.2019.105737

36. First Report of Bacterial Leaf Spot of Crown-of-Thorns (Euphorbia milii) Caused by Xanthomonas axonopodis pv. poinsettiicola in Taiwan

Author:
Y.-R. Lin; S. Lee; C.-H. Lu; C.-C. Chu
Source:
Plant disease 2019 v.103 no.4 pp. 759
ISSN:
0191-2917
Subject:
Euphorbia milii; Euphorbia pulcherrima; Xanthomonas axonopodis; Xanthomonas campestris pv. campestris; Xanthomonas codiaei; Xanthomonas hortorum; aerial parts; agar; bacterial diseases of plants; carbonates; casein; disease transmission; flowers; genes; glucose; hosts; humidity; hypersensitive response; inoculum density; leaf spot; leaves; light microscopes; lipids; markets; multilocus sequence typing; plant pathogenic bacteria; plastic bags; polymerase chain reaction; sequence homology; spraying; starch; tissues; tobacco; yeasts; Taiwan; United States
Abstract:
... Crown-of-thorns (Euphorbia milii; Euphorbiaceae) is a popular plant widely grown as a potted flower or hedge in many countries (Marys and Romano 2011). In 2017, leaf spot symptoms were observed on potted E. milii in a plant market located in Nantun District, Taichung, Taiwan. Over 90% of the plants onsite were infected. Leaf lesions were round, had necrotic centers, and had margins that appeared y ...
DOI:
10.1094/PDIS-09-18-1651-PDN

37. First Report of Catharanthus Yellow Mosaic Virus, Pedilanthus Leaf Curl Virus, and Tomato Leaf Curl Betasatellite Infecting Duranta erecta in Pakistan

Author:
M. N. Shuja; M. Ali; T. Ali; B. Khattak; M. Qasim; S. Winter
Source:
Plant disease 2019 v.103 no.5 pp. 1049
ISSN:
0191-2917
Subject:
Begomovirus; Brassica rapa; Capsicum annuum; Carica papaya; Catharanthus roseus; Cestrum nocturnum; DNA fragmentation; Daucus carota; Duranta erecta; Euphorbia pulcherrima; Glycine max; Raphanus sativus; Solanum lycopersicum; Tabernaemontana divaricata; Tomato leaf curl betasatellite; cetyltrimethylammonium bromide; circular DNA; clones; crop production; crops; disease incidence; enzymatic hydrolysis; gardens; leaf curling; leaves; nucleotide sequences; nucleotides; ornamental plants; plasmid vectors; restriction endonucleases; satellites; sequence analysis; viruses; India; Pakistan
Abstract:
... Golden dewdrop (Duranta erecta L.; family Verbenaceae) is an ornamental plant that is commonly grown as a garden hedge in Pakistan. In May 2018, begomovirus-like symptoms of severe leaf curling and yellow mosaic were observed on D. erecta plants grown in the vicinity of Kohat University (Khyber Pakhtunkhwa province, Pakistan) with a disease incidence of approximately 20%. Leaf samples were collect ...
DOI:
10.1094/PDIS-08-18-1308-PDN

38. First Report of Dickeya dadantii Causing Stem Rot of Poinsettia in Taiwan

Author:
X.-Y. Wei; Y.-H. Chiu; W.-L. Deng; C.-C. Chu
Source:
Plant disease 2019 v.103 no.1 pp. 143
ISSN:
0191-2917
Subject:
Dickeya dadantii; Dickeya solani; Erwinia chrysanthemi; Euphorbia pulcherrima; agar; bacteria; carbonates; enzymes; geographical distribution; glucose; growth chambers; insects; leaf blade; lodging; maceration; paper; petioles; plastic bags; polymerase chain reaction; potatoes; probability; ribosomal DNA; sequence analysis; shoots; stem rot; stems; tubers; yeasts; China; Czech Republic; Taiwan; United States
Abstract:
... Stem rot symptoms were observed on potted poinsettia plants (Euphorbia pulcherrima var. Wonderful) in a nursery located in Tongluo Township, Miaoli County, Taiwan. Infected plants exhibited large water-soaked lesions on the upper portion of their shoots, and stem lodging occurred in many severely infected plants. In most cases, the water-soaked lesions also expanded along the petiole up to the bas ...
DOI:
10.1094/PDIS-03-18-0397-PDN

39. First Report of Powdery Mildew Caused by Leveillula clavata on Wild Poinsettia (Euphorbia heterophylla) in China

Author:
H. Wu; W. Miao; Y. Pan; R. Di; Q. He; W. Liu
Source:
Plant disease 2019 v.103 no.5 pp. 1034
ISSN:
0191-2917
Subject:
pressing; DNA primers; subtropics; medicinal plants; appressoria; greenhouses; conidia; pastures; ribosomal DNA; powdery mildew; invasive species; mycelium; introduced plants; herbal medicines; anamorphs; Euphorbia heterophylla; germ tube; conidiophores; relative humidity; pathogenicity; weeds; teleomorphs; Euphorbia pulcherrima; Oidiopsis; Leveillula taurica; stomata; fungi; China
Abstract:
... Wild poinsettia (Euphorbia heterophylla L.) is a species in the genus Euphorbia (family Euphorbiaceae), which is a serious weed problem in agricultural and pasture land worldwide (Chachalis 2015). In China, this invasive alien plant is widely distributed throughout the tropical and subtropical regions and is commonly used as an ornamental and in Chinese herbal medicine. In December 2017, typical s ...
DOI:
10.1094/PDIS-09-18-1656-PDN

40. Gas exchange of poinsettia leaves from the stock plant through the propagation environment

Author:
P. O. Alem; J. E. Faust
Source:
Acta horticulturae 2019 v. no.1263 pp. 223-228
ISSN:
0567-7572
Subject:
Euphorbia pulcherrima; chlorophyll; cold storage; gas exchange; harvesting; leaves; photosynthesis; plant cuttings; roots; transpiration
Abstract:
... Gas exchange (photosynthesis and transpiration) and chlorophyll fluorescence measurements were recorded on poinsettia (Euphorbia pulcherrima) leaves on stock plants prior to cutting removal and then on those same leaves after the cuttings were harvested from the stock plant, placed in a simulated postharvest environment for 3 d, and grown on a propagation bench for 28 d. The results demonstrate th ...
DOI:
10.17660/ActaHortic.2019.1263.28

41. Integration of microbial biopesticides in greenhouse floriculture: The Canadian experience

Author:
Michael Brownbridge; Rose Buitenhuis
Source:
Journal of invertebrate pathology 2019 v.165 pp. 4-12
ISSN:
0022-2011
Subject:
Chrysanthemum; Euphorbia pulcherrima; biological control; floriculture; floriculture crops; greenhouses; growers; integrated pest management; markets; mechanism of action; microbial insecticides; pest control; pests; philosophy; production technology; spinosad; Canada
Abstract:
... Historically, greenhouse floriculture has relied on synthetic insecticides to meet its pest control needs. But, growers are increasingly faced with the loss or failure of synthetic chemical pesticides, declining access to new chemistries, stricter environmental/health and safety regulations, and the need to produce plants in a manner that meets the ‘sustainability’ demands of a consumer driven mar ...
DOI:
10.1016/j.jip.2017.11.013

42. Low substrate pH can affect plant growth without inducing leaf symptomology of petunia and poinsettia

Author:
B. E. Whipker; W. G. Owen; I. McCall; B. E. Jackson
Source:
Acta horticulturae 2019 no.1266 pp. 255-260
ISSN:
0567-7572
Subject:
Euphorbia pulcherrima; Petunia; diet-related diseases; dolomitic limestone; growers; iron; leaves; monitoring; pH; peat; perlite; plant growth; tissue analysis; toxicity
Abstract:
... Diagnosing plant nutritional disorders requires knowing the critical pH ranges and visual symptoms. Two experiments were conducted incorporating increasing rates of dolomitic lime to an 80% peat + 20% perlite substrate (v:v) to establish substrate pH ranges for assessing plant growth. In Experiment 1, petunia ‘Single Picobella Rose Star’ (RS; Petunia milliflora) and ‘Prostrate Easy Wave Neon Rose’ ...
DOI:
10.17660/ActaHortic.2019.1266.36

43. Molecular evidence for repeated recruitment of wild Christmas poinsettia (Euphorbia pulcherrima) into traditional horticulture in Mexico

Author:
Laura Trejo; Estefania Briones-Dumas; Roberto Gómez-Bermejo; Mark E. Olson
Source:
Genetic resources and crop evolution 2019 v.66 no.2 pp. 481-490
ISSN:
0925-9864
Subject:
Euphorbia pulcherrima; chloroplasts; color; cultivars; domestication; gardens; genetic variation; hills; homeowners; human settlements; inflorescences; ornamental plants; wild plants; Mexico
Abstract:
... One of Mexico’s most emblematic and economically important plants is the poinsettia (Euphorbia pulcherrima). After nearly 200 years of poinsettia cultivation outside Mexico, more than 300 varieties of many different sizes, shapes and colors have been generated. However, studies on the management of or the evolutionary processes through which the changes present in cultivars have been generated, st ...
DOI:
10.1007/s10722-018-0727-1

44. Quantification of Poinsettia Root Growth by Image Scans or X-ray Computed Tomography Scans in Three Propagation Substrates at Varied Moisture Levels

Author:
Erin J. Yafuso; Paul R. Fisher; Ana C. Bohórquez
Source:
Communications in soil science and plant analysis 2019 v.50 no.18 pp. 2354-2367
ISSN:
1532-2416
Subject:
Euphorbia pulcherrima; X-radiation; air; computed tomography; foams; growth chambers; image analysis; peat; plant cuttings; rockwool; root growth; rooting; volumetric water content; water content
Abstract:
... The objective was to refine protocols to quantify rooting of plant cuttings and the water/air microenvironment of substrates using x-ray computed tomography (CT). Poinsettia (Euphorbia pulcherrima) cuttings were propagated in three substrates (peat, rockwool, and phenolic foam) at varied moisture levels. In Experiment 1, adventitious rooting occurred in cuttings grown in rockwool or foam from 12% ...
DOI:
10.1080/00103624.2019.1659305

45. Quantifying the Effects of Chelated Calcium and Salicylic Acid on the Postharvest Quality of Poinsettia Cuttings

Author:
Uttara C. Samarakoon; James E. Faust
Source:
HortTechnology 2019 v.29 no.1 pp. 30-34
ISSN:
1063-0198
Subject:
Euphorbia pulcherrima; Pelargonium hortorum; calcium; calcium chloride; durability; foliar application; leaves; pathogens; phytotoxicity; salicylic acid; storage quality; strength (mechanics); texture
Abstract:
... Vegetatively propagated unrooted cuttings typically are grown in equatorial locations and shipped via airfreight to propagators located in temperate climates. Cutting quality, defined as the resistance to external forces, such as physical damage and pathogen infection, impacts postharvest durability during shipping and propagation. During our previous studies, foliar application of calcium (Ca) in ...
DOI:
10.21273/HORTTECH04200-18

46. Rapid Sand Filtration of Recycled Irrigation Water Controlled Pythium Root Rot of Poinsettia in Greenhouse

Author:
Sangho Jeon; Charles S. Krasnow; Gemini D. Bhalsod; Blair R. Harlan; Mary K. Hausbeck; Steven I. Safferman; Wei Zhang
Source:
HortTechnology 2019 v.29 no.5 pp. 578-589
ISSN:
1063-0198
Subject:
Euphorbia pulcherrima; Pythium aphanidermatum; activated carbon; chlorosis; etridiazole; filtration; floriculture; fungicide application; greenhouses; inoculum; irrigation water; nutrient deficiencies; pathogens; root rot; sand; sand filters
Abstract:
... Pythium species incite crown and root rot and can be highly destructive to floriculture crops in greenhouses, especially when irrigation water is recycled. This study assessed the performance of rapid filtration of recycled irrigation water for controlling pythium root rot of poinsettia (Euphorbia pulcherrima) in greenhouses. Two greenhouse experiments investigated the effect of filter media type ...
DOI:
10.21273/HORTTECH04226-18

47. Silicon Affects Root Development, Tissue Mineral Content, and Expression of Silicon Transporter Genes in Poinsettia (Euphorbia pulcherrima Willd.) Cultivars

Author:
Jiangtao Hu; Xuan Cai; Byoung Ryong Jeong
Source:
Plants 2019 v.8 no.6 pp. -
ISSN:
2223-7747
Subject:
Euphorbia pulcherrima; air temperature; boron; cultivars; genes; magnesium; mineral content; plant cuttings; potassium silicates; relative humidity; roots; shade; shoots; silicon; sulfur; zinc
Abstract:
... The effects of silicon (Si) on root development, mineral content, and expression of Si transporter genes in Euphorbia pulcherrima Willd. ‘Flame’, ‘Mable Bell’, ‘Green Star’, ‘Pink Bell’, and ‘Peach Bowl’ cultivars were investigated in this study. Stem cuttings in a propagation bench were drenched regularly with a solution containing eithe ...
DOI:
10.3390/plants8060180
PubMed:
31213031
PubMed Central:
PMC6630514

48. Simulated storage causes carbohydrate loss and rooting differences in two poinsettia cultivars

Author:
Nathan J. Jahnke; John M. Dole; Hamid Ashrafi
Source:
Canadian journal of plant science 2019 v.100 no.4 pp. 459-462
ISSN:
1918-1833
Subject:
Euphorbia pulcherrima; cultivars; fructose; glucose
Abstract:
... Unrooted cuttings of ‘Prestige Red’ and ‘White Star’ poinsettias (Euphorbia pulcherrima Willd. ex Klotzsch) were stored in a box at 10 °C for 0, 2, 4, 6 or 8 d to simulate shipping and holding. Visual root ratings decreased following ≥4 d of storage but did not differ from the non-stored cuttings. Root rating of ‘White Star’ was 0.5 higher and cuttings maintained higher fructose and glucose concen ...
DOI:
10.1139/cjps-2019-0232

49. Time in propagation and photosynthetic photon flux affect water demand of unrooted poinsettia cuttings prior to root initiation

Author:
P. O. Alem; J. E. Faust
Source:
Acta horticulturae 2019 v. no.1263 pp. 105-110
ISSN:
0567-7572
Subject:
Euphorbia pulcherrima; mists; photons; photosynthesis; plant cuttings; water uptake; water use efficiency; wilting
Abstract:
... Commercial propagators reduce the frequency of mist provided to unrooted poinsettia (Euphorbia pulcherrima) cuttings on a daily basis during the first week in propagation prior to root initiation. This practice suggests that water regulation by the cuttings changes as the cuttings recover from being harvested from the stock plant. The first experiment demonstrated that when cuttings were removed f ...
DOI:
10.17660/ActaHortic.2019.1263.13

50. Wild poinsettia biology and management – determining optimal control with herbicides and propane flaming

Author:
Ran Nisim Lati; Yaakov Goldwasser; Alon Horesh; Karam Igbariya
Source:
Crop protection 2019 v.115 pp. 20-26
ISSN:
0261-2194
Subject:
Euphorbia heterophylla; Euphorbia pulcherrima; control methods; crops; dose response; flowering; germination; glufosinate; glyphosate; irrigation; leaves; models; orchards; pesticide application; phenology; propane; summer; temperature; trifloxysulfuron; weed control; weeds; weight loss
Abstract:
... Wild poinsettia (Euphorbia heterophylla L.) is a troublesome weed in irrigated summer crops and orchards. Data regarding the optimal herbicide rates for control of this weed, the impact of phenology on control efficacy, and non-chemical control methods for this weed are scarce. The objectives of this study were to: conduct dose-response analyses for trifloxysulfuron at 0–11.2 g a. i. ha⁻¹, glyphos ...
DOI:
10.1016/j.cropro.2018.09.002