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1. Leaf anatomical features of the Eriosema campestre Benth. (Leguminosae, Papilionoideae, Phaseoleae) complex and potential taxonomic implications

Author:
Pacheco Seixas, Diana; Fortuna-Perez, Ana Paula; Rodrigues, Tatiane Maria
Source:
Flora 2019 v.253 pp. 107-115
ISSN:
0367-2530
Subject:
petioles,   etc   ; Eriosema; herbaria; morphs; phloem; trichomes;     Show all 6 Subjects
Abstract:
... Identification of taxa of the Eriosema campestre Benth. (Leguminosae, Papilionoideae, Phaseoleae) complex has proven difficult due to their morphological uniformity. Eriosema campestre is currently considered to comprise three varieties (E. campestre var. campestre, E. campestre var. delicatula Fortunato and E. campestre var. macrophyllum (Grear) Fortunato), which are mainly distinguished by chara ...
DOI:
10.1016/j.flora.2019.03.011

2. Arabidopsis petiole torsions induced by lateral light or externally supplied auxin require microtubule-associated TORTIFOLIA1/SPIRAL2

Author:
Borchers, A.; Deckena, M.; Buschmann, H.
Source:
Protoplasma 2018 v.255 no.5 pp. 1505-1515
ISSN:
0033-183X
Subject:
petioles,   etc   ; Arabidopsis; auxins; microtubules; mutants; tropisms;     Show all 6 Subjects
Abstract:
... Although rather inconspicuous, movements are an important adaptive trait of plants. Consequently, light- or gravity-induced movements leading to organ bending have been studied intensively. In the field, however, plant movements often result in organ twisting rather than bending. This study investigates the mechanism of light- or gravity-induced twisting movements, coined “helical tropisms.” Becau ...
DOI:
10.1007/s00709-018-1247-8

3. Effect of position and size of leaflets on rooting and rhizome formation of ZZ plant (Zamioculcas zamiifolia (Lodd.) Engl.) leaflet cuttings

Author:
Thongkham, Leelawadee; Phavaphutanon, Lop
Source:
Agriculture and natural resources 2018 v.52 no.3 pp. 246-249
ISSN:
2452-316X
Subject:
petioles,   etc   ; Zamioculcas zamiifolia; cutting; rhizomes; rooting;     Show all 5 Subjects
Abstract:
... Rooting and rhizome formation was compared of ZZ plant leaflet cuttings taken from the apical, middle, and basal positions of the petiole. Leaflets from each position were propagated as a whole leaflet, an upper half leaflet segment and a lower-half leaflet segment. Whole leaflets from the basal position had greater size and fresh weight than those from the middle and the apical positions, respect ...
DOI:
10.1016/j.anres.2018.09.016

4. Hedyotis austrosinica sp. nov. (Rubiaceae) from southern China: A new heterostylous species similar to H. pulcherrima

Author:
Yang, Li‐Hua; Zhou, Ji‐Gang; Xu, Ping; Wu, Lei
Source:
Nordic journal of botany 2018 v.36 no.4 pp. enjb-01499
ISSN:
0107-055X
Subject:
petioles,   etc   ; Hedyotis; heterostyly; new species; stems; China;     Show all 6 Subjects
Abstract:
... Hedyotis austrosinica L. Wu & L.H. Yang is described as a new species from southern China. It is similar to H. pulcherrima, but can be separated by its herbaceous weak to ascending habit with dense pubescence on the surface of most organs, 4‐angled to subterete stems, longer petioles, and longer stipules with 5–9 apical linear lobes. The new species is distributed in Guangdong and Guangxi in south ...
DOI:
10.1111/njb.01499

5. Re-evaluating pressure chamber methods of water status determination in field-grown grapevine (Vitis spp.)

Author:
Levin, Alexander D.
Source:
Agricultural water management 2019 v.221 pp. 422-429
ISSN:
0378-3774
Subject:
petioles,   etc   ; Vitis; irrigation scheduling; leaf water potential; monitoring; protocols; sampling; vines; vineyards; wages and remuneration;     Show all 10 Subjects
Abstract:
... Despite the fact that the pressure chamber has been used as a tool to assess vine water status and assist in scheduling vineyard irrigation for more than 30 years, there remains some disagreement in sampling protocol with respect to midday leaf water potential (Ψleaf) and midday stem water potential (Ψstem) determination. Therefore, the primary goal of this study was to test various sampling proto ...
DOI:
10.1016/j.agwat.2019.03.026

6. In situ histochemical localization of alkaloids in leaves and pods of Prosopis ruscifolia

Author:
Gomez, Analía A.; Mercado, María I.; Belizán, María M.E.; Ponessa, Graciela; Vattuone, Marta A.; Sampietro, Diego A.
Source:
Flora 2019 v.256 pp. 1-6
ISSN:
0367-2530
Subject:
petioles,   etc   ; Prosopis ruscifolia; anti-infective agents; indolizidine alkaloids; phloem; pods; spraying; trees; trichomes;     Show all 9 Subjects
Abstract:
... The tree Prosopis ruscifolia produces indolizidine alkaloids which function in plant defense as antimicrobials. Here, we propose the use of Drangendorff´s reagent, picric acid and lugol for the in situ histochemical localization of indolizidine alkaloids in the leaf parts (petiole, rachis and leaflet) and pods of P. ruscifolia. The main surface and internal anatomical features of the aerial plant ...
DOI:
10.1016/j.flora.2019.04.008

7. Nutritional changes in petiole sap over space and time in a tomato crop greenhouse

Author:
Llanderal, Alfonso; García-Caparrós, Pedro; Segura, María L.; Contreras, Juana I.; Lao, María T.
Source:
Journal of plant nutrition 2019 v.42 no.10 pp. 1205-1217
ISSN:
1532-4087
Subject:
petioles,   etc   ; calcium; greenhouses; magnesium; nitrate nitrogen; nutrients; phenology; potassium; sap; sodium; temporal variation; tomatoes;     Show all 12 Subjects
Abstract:
... The aims of this trial were to determine the spatial and temporal variability of the nutrients in petiole sap in a tomato crop under greenhouse and to determine the number of sub-samples for a representative sample. The experiment consisted of the selection of 20 sampling points. Petiole of fully expanded leaf was collected weekly in order to determine Cl, NO₃-N, H₂PO₄-P, SO₄-S, Na, K, Ca and Mg c ...
DOI:
10.1080/01904167.2019.1609504

8. The comparative xylem structure and function of petioles and twigs of mistletoe Loranthus europaeus and its host Quercus pubescence

Author:
Gebauer, Roman; Albrechtová, Petra; Plichta, Roman; Volařík, Daniel
Source:
Trees 2019 v.33 no.3 pp. 933-942
ISSN:
0931-1890
Subject:
petioles,   etc   ; Loranthus; Quercus pubescens; branches; hosts; leaf water potential; photosynthesis; transpiration; tree physiology; water supply; xylem;     Show all 11 Subjects
Abstract:
... KEY MESSAGE: The xylem structure of the petiole and twig revealed in this study increase our knowledge about mistletoe and host function and their interaction. Although transpiration and photosynthesis relationships between mistletoes and their hosts have been studied extensively, only a few studies have been performed on their comparative anatomical structures. To our knowledge, no studies have f ...
DOI:
10.1007/s00468-019-01829-2

9. Growth and mortality patterns of the Neotropical bracken (Pteridium arachnoideum) and their response to shading in a savanna–riparian forest transition

Author:
Xavier, Rafael de Oliveira; Dodonov, Pavel; Silva Matos, Dalva Maria da
Source:
Flora 2019 v.252 pp. 36-43
ISSN:
0367-2530
Subject:
petioles,   etc   ; Pteridium aquilinum; biodiversity; canopy; clones; ecosystems; forests; fronds; herbivores; mortality; shade; shade tolerance; trees; Brazil;     Show all 14 Subjects
Abstract:
... Although certain clonal species are often overdominant in disturbed tropical ecosystems, it is often unclear how this success is related to their patterns of clonal growth and how they respond to abiotic heterogeneity. Here we describe ramet growth and survival in an overdominant Neotropical bracken fern (Pteridium arachnoideum) and assess how these patterns resemble congeneric species and are aff ...
DOI:
10.1016/j.flora.2019.02.005

10. Internal transport of CO2 from the root‐zone to plant shoot is pH dependent

Author:
Shimono, Hiroyuki; Kondo, Motohiko; Evans, John R.
Source:
Physiologia plantarum 2019 v.165 no.3 pp. 451-463
ISSN:
0031-9317
Subject:
petioles,   etc   ; bicarbonates; carbon; carbon dioxide; gas exchange; isotope labeling; pH; rhizosphere; roots; stable isotopes; transpiration; xylem;     Show all 12 Subjects
Abstract:
... We investigated the fate of carbon dioxide (CO₂) absorbed by roots or internally produced by respiration using gas exchange and stable isotopic labeling. CO₂ efflux from detached leaves supplied with bicarbonate/CO₂ solutions was followed over six cycles. CO₂ effluxes were detected when bicarbonate solution at high pH was used, corresponding to 71–85% of the expected efflux. No CO₂ efflux was dete ...
DOI:
10.1111/ppl.12767

11. Field Evaluation of Potato N Needs Following Forage Legumes

Author:
Kelling, Keith A.; Andraski, Todd W.; Speth, Phillip E.
Source:
American journal of potato research 2019 v.96 no.1 pp. 62-68
ISSN:
1099-209X
Subject:
petioles,   etc   ; Trifolium pratense; alfalfa; forage; forage legumes; nitrate nitrogen; nitrogen; nitrogen fertilizers; potatoes; Wisconsin;     Show all 10 Subjects
Abstract:
... In an attempt to quantify the nitrogen (N) contribution from forage legumes to succeeding potatoes, trials were conducted on 28 Wisconsin alfalfa or red clover fields. Potato total yield and crop value were determined following in-season fertilizer N applications of 0 to 280 kg ha⁻¹. Only 2 of the 12 alfalfa sites and 6 of the 16 red clover sites responded to applied fertilizer N when total yield ...
DOI:
10.1007/s12230-018-9689-2

12. Possibility of Recommending Potassium Application Rates Based on a Rapid Detection of the Potato Petiole K Status with a Portable K ion Meter

Author:
Shi, Xiaohua; Zhang, Xin; Kang, Wenqin; Chen, Yang; Fan, Mingshou
Source:
American journal of potato research 2019 v.96 no.1 pp. 48-54
ISSN:
1099-209X
Subject:
petioles,   etc   ; application rate; crop yield; equations; potassium; potassium fertilizers; potatoes; rapid methods; soil; tubers; vines;     Show all 11 Subjects
Abstract:
... Because of the variations in the K amount required to produce 1 t potatoes and the poor relationship between soil potassium content and potato yield, recommended K-fertilizer rates based on soil tests are unreliable for potato production. This research was set to test the possibility of establishing a potato plant K diagnosis method with a portable K ion meter. The results confirmed the luxury abs ...
DOI:
10.1007/s12230-018-9687-4

13. Leaf area estimation by considering leaf dimensions in olive tree

Author:
Koubouris, Georgios; Bouranis, Dimitris; Vogiatzis, Efraim; Nejad, Abdolhossein Rezaei; Giday, Habtamu; Tsaniklidis, Georgios; Ligoxigakis, Eleftherios K.; Blazakis, Konstantinos; Kalaitzis, Panagiotis; Fanourakis, Dimitrios
Source:
Scientia horticulturae 2018 v.240 pp. 440-445
ISSN:
0304-4238
Subject:
petioles,   etc   ; Olea europaea; cultivars; environmental impact; irrigation; leaf area; models;     Show all 7 Subjects
Abstract:
... Area (LA) estimation, based on individual leaf dimensions [length (L) and width (W)], was addressed in olive tree. Ten cultivars exposed to two watering regimes (irrigated versus rainfed) under field conditions were examined. Petiole length, leaf L, W, perimeter, base and apex angles, four shape indicators, together with LA were digitally assessed in fully-expanded leaves (480 leaves per treatment ...
DOI:
10.1016/j.scienta.2018.06.034

14. A New Species of the Extinct Ant Genus Electromyrmex (Hymenoptera, Formicidae)

Author:
Radchenko, A. G.; Dlussky, G. M.
Source:
Vestnik zoologii 2018 v.52 no.5 pp. 361-366
ISSN:
2073-2333
Subject:
petioles,   etc   ; Aphaenogaster; Messor; Pheidole; furrows; males; new species; wings;     Show all 8 Subjects
Abstract:
... Electromyrmex wheeleri sp. n., which belongs to the extinct ant genus is described based on males from the Baltic and Bitterfeld Ambers (Priabonian stage, 33.9-37.2 Ma). Until now only one species of this specialized genus based on a single worker was described and taxonomic position of this genus in the subfamily Myrmicinae remains uncertain. By the forewing venation, males of E. wheeleri resembl ...
DOI:
10.2478/vzoo-2018-0038

15. Characterisation of composite panels produced from lignin-glyoxal-resin reinforced by date palm petiole fibers

Author:
Ammar, Mohamed; Mechi, Nabawia; Saad, Mohamed El Khames; Elaloui, Elimame; Moussaoui, Younes
Source:
European journal of wood and wood products 2018 v.76 no.4 pp. 1295-1302
ISSN:
0018-3768
Subject:
petioles,   etc   ; Phoenix dactylifera; diffusivity; modulus of elasticity; tensile strength;     Show all 5 Subjects
Abstract:
... Different composites panels were prepared using two granulometrys of fibers from date palm petiole (PDPF) and bio-matrix from lignin-glyoxal-resin (LGR). The composites panels were manufactured at different PDPF percentages ranging from 10 to 70 wt%. Mechanical properties of the prepared samples were evaluated by measuring tensile strength, Young`s modulus and elongation. The obtained results show ...
DOI:
10.1007/s00107-018-1297-9

16. Feature extraction of overlapping hevea leaves: A comparative study

Author:
Anjomshoae, Sule T.; Rahim, Mohd Shafry Bin Mohd
Source:
Information processing in agriculture 2018 v.5 no.2 pp. 234-245
ISSN:
2214-3173
Subject:
petioles,   etc   ; Hevea brasiliensis; automation; plant morphology; plant taxonomy; rubber;     Show all 6 Subjects
Abstract:
... Automation of rubber tree clone classification has inspired research into new methods of leaf feature extraction. In current practice, rubber clone inspectors has been using several leaf features to identify clone types. One of the unique features of rubber tree leaf is palmate leaflets. This characteristic generates different leaflet positions, where the leaves are overlapping or separated. In th ...
DOI:
10.1016/j.inpa.2018.02.001

17. Comparative petiole anatomy of the tribe Sorbarieae (Rosaceae) provide new taxonomically informative characters

Author:
Song, Jun‐Ho; Hong, Suk‐Pyo
Source:
Nordic journal of botany 2018 v.36 no.5 pp. enjb-01702
ISSN:
0107-055X
Subject:
petioles,   etc   ; Adenostoma; Chamaebatiaria; Sorbaria; crystals; staining; trichomes; vascular bundles;     Show all 8 Subjects
Abstract:
... We conducted a comparative anatomical study of the petiole of 16 taxa belonging to the tribe Sorbarieae (Rosaceae) (Adenostoma, 2 spp.; Chamaebatiaria, 1 sp.; Sorbaria, 6 spp., 3 vars., and 1 forma; and Spiraeanthus, 1 sp.) and the related genus Lyonothamnus (1 sp. and 1 ssp.). The distal, medial and proximal regions of petioles were transversely sectioned using conventional embedding and staining ...
DOI:
10.1111/njb.01702

18. Análisis morfológico y anatómico del complejo Myriopteris lendigera (Pteridaceae) en México

Author:
Pérez-Atilano, Yarely; Sánchez-González, Arturo; Terrazas, Teresa; Alejandra Vasco, Y.
Source:
Brittonia 2018 v.70 no.1 pp. 40-59
ISSN:
0007-196X
Subject:
petioles,   etc   ; Pteridaceae; descriptive statistics; herbaria; plant taxonomy; variance; Mexico;     Show all 7 Subjects
Abstract:
... The complex Myriopteris lendigera is composed of three species, M. lendigera, M. marsupianthes and M. mexicana, which are characterized by a high degree of morphological variation, making it a complex task to establish clear boundaries between these taxa. The objective of this study was to analyze the morphological and anatomical characteristics of this complex in order to define its taxonomic sta ...
DOI:
10.1007/s12228-017-9496-y

19. Developmental changes in collenchyma cell-wall polysaccharides in celery (Apium graveolens L.) petioles

Author:
Chen, Da; Melton, Laurence D.; Zujovic, Zoran; Harris, Philip J.
Source:
BMC plant biology 2019 v.19 no.1 pp. 81
ISSN:
1471-2229
Subject:
petioles,   etc   ; Apium graveolens; celery; cell walls; cellulose; chemical analysis; collenchyma; esterification; nuclear magnetic resonance spectroscopy; pectins; xyloglucans;     Show all 11 Subjects
Abstract:
... BACKGROUND: Collenchyma cells occur widely in eudicotyledons and provide mechanical support for growing organs. At maturity, the cells are elongated and have thick, non-lignified walls, which in celery contain cellulose and pectic polysaccharides, together with xyloglucans and heteroxylans and heteromannans. A previous study suggested that at least some of the collenchyma cell wall in celery is la ...
DOI:
10.1186/s12870-019-1648-7

20. Memecylon idukkianum, a new species of Melastomataceae from Kerala, India

Author:
Radh, S. Syam; Nampy, Santhosh
Source:
Kew bulletin 2019 v.74 no.1 pp. 6
ISSN:
0075-5974
Subject:
petioles,   etc   ; Memecylon; cymes; flowers; fruits; indigenous species; national parks; new species; plant taxonomy; scientific illustration; taxon descriptions; India; Sri Lanka;     Show all 13 Subjects
Abstract:
... A new species of Melastomataceae, Memecylon idukkianum Nampy & Syam Radh, is described and illustrated from Mathikettan Shola National Park, Kerala, India. It is morphologically allied to M. varians Thwaites, an endemic species from Sri Lanka, but differs in the quadrangular branchlets, leaves with an acute or obtuse apex, petioles 5 – 9 mm long, 15 – 20-flowered cymes, white flowers and deep blue ...
DOI:
10.1007/s12225-019-9800-y