PubAg

Main content area

You searched for: Subject "coleoptiles" Remove constraint Subject: "coleoptiles"
Start Over

Search

647  Search Results

« Previous | 1 - 20 of 647 |
Number of results to display per page

Search Results

1. Lazy rice in space: gravity regulates helical movement in plants

Author:
Baral, Anirban
Source:
Physiologia plantarum 2019 v.165 no.3 pp. 448-450
ISSN:
0031-9317
Subject:
coleoptiles,   etc   ; embryophytes; microgravity; mutants; nutation; rice; seedlings;     Show all 7 Subjects
Abstract:
... Circumnutation, the helical movement of organs, has been observed in diverse species of land plants. Whether circumnutation arises purely from internal growth oscillations or as a response to exogenous forces such as gravity is a subject of active debate. By observing rice seedlings grown under microgravity at the International Space Station (ISS) and analyzing the agravitropic lazy1 mutant, Kobay ...
DOI:
10.1111/ppl.12925

2. Circumnutational movement in rice coleoptiles involves the gravitropic response: analysis of an agravitropic mutant and space‐grown seedlings

Author:
Kobayashi, Akie; Kim, Hye‐Jeong; Tomita, Yuta; Miyazawa, Yutaka; Fujii, Nobuharu; Yano, Sachiko; Yamazaki, Chiaki; Kamada, Motoshi; Kasahara, Haruo; Miyabayashi, Sachiko; Shimazu, Toru; Fusejima, Yasuo; Takahashi, Hideyuki
Source:
Physiologia plantarum 2019 v.165 no.3 pp. 464-475
ISSN:
0031-9317
Subject:
coleoptiles,   etc   ; gravitropism; imbibition; microgravity; mutants; nutation; photography; rice; seed germination; seedlings; seeds; space flight;     Show all 12 Subjects
Abstract:
... Plants exhibit helical growth movements known as circumnutation in growing organs. Some studies indicate that circumnutation involves the gravitropic response, but this notion is a matter of debate. Here, using the agravitropic rice mutant lazy1 and space‐grown rice seedlings, we found that circumnutation was reduced or lost during agravitropic growth in coleoptiles. Coleoptiles of wild‐type rice ...
DOI:
10.1111/ppl.12824

3. Study of the Germination Capacity of Maize Seeds Exposed to Low Temperatures

Author:
David, Ivona
Source:
The Annals of "Valahia" University of Târgovişte 2018 v.12 no.1 pp. 18-21
ISSN:
2537-3137
Subject:
coleoptiles,   etc   ; cold; corn; hybrids; seed germination; temperature; vigor;     Show all 7 Subjects
Abstract:
... In this paper, were studied three maize hybrids in terms of seed germination capacity when they were exposed to low temperatures. Also, some elements regarding the seed vigor were analyzed, namely the length of the coleoptile, the length of the root and the weight of the germ. Exposure temperatures were 25 ° C (control), 6 ° C and 5 ° C and the hybrids analyzed were Olt, F 376 and Turda 201. The r ...
DOI:
10.2478/agr-2018-0004

4. Radiosensitivity and mutability of wheat seed progeny cultivated under adverse environments

Author:
Antonova, Elena V.; Khlestkina, Elena K.
Source:
Plant physiology and biochemistry 2019 v.137 pp. 162-168
ISSN:
0981-9428
Subject:
coleoptiles,   etc   ; Triticum aestivum; gamma radiation; gravitropism; greenhouses; hydroponics; irradiation; leaves; microclimate; necrosis; progeny; roots; seedlings; seeds; survival rate; wheat;     Show all 16 Subjects
Abstract:
... This research analysed the growth process dynamics of soft wheat (Triticum aestivum L.) seeds cultivated in contrasting microclimatic conditions. We used acute gamma irradiation (5–50 Gy) as a provocative factor to detect hidden differences in the adaptive potential of seeds cultivated under adverse conditions (wet and cool field season) in comparison to seeds obtained under controlled conditions ...
DOI:
10.1016/j.plaphy.2019.02.011

5. Biological Substantiation of Application of Microfertilizers and Organo-Mineral Preparations for the Foliar Treatment of Wheat

Author:
Kolesnikov, L. E.; Melnikov, S. P.; Kiselev, M. V.; Zuev, E. V.; Vasileva, T. A.
Source:
Russian agricultural sciences 2019 v.45 no.2 pp. 115-118
ISSN:
1068-3674
Subject:
coleoptiles,   etc   ; Triticum aestivum; grain yield; humic substances; leaves; roots; silver; spikelets; spring wheat; tillering; trace element fertilizers;     Show all 11 Subjects
Abstract:
... Data on the evaluation of the effect of ten preparations based on humic substances and silver (FlorHumat, Flora-S, Edagum, Fitop Flora-S, Zerebra agro, BatyrMax, Batyr 40N, Batyr 40N + Max, Azofoska) on the productivity of spring soft wheat are presented. Plant productivity was studied according to the following parameters: plant phase (according to the Eucarpia scale), the number of germinal and ...
DOI:
10.3103/S1068367419020125

6. Myc-like transcriptional factors in wheat: structural and functional organization of the subfamily I members

Author:
Strygina, Ksenia V.; Khlestkina, Elena K.
Source:
BMC plant biology 2019 v.19 no.Supplement 1 pp. 50
ISSN:
1471-2229
Subject:
coleoptiles,   etc   ; anthocyanins; biosynthesis; drought; frameshift mutation; genes; messenger RNA; osmotic stress; promoter regions; salinity; salt stress; seedlings; transcription factors; wheat;     Show all 14 Subjects
Abstract:
... BACKGROUND: Myc-like regulatory factors carrying the basic helix–loop–helix (bHLH) domain belong to a large superfamily of transcriptional factors (TFs) present in all eukaryotic kingdoms. In plants, the representatives of this superfamily regulate diverse biological processes including growth and development as well as response to various stresses. As members of the regulatory MBW complexes, they ...
DOI:
10.1186/s12870-019-1639-8

7. β-Pinene moderates Cr(VI) phytotoxicity by quenching reactive oxygen species and altering antioxidant machinery in maize

Author:
Mahajan, Priyanka; Singh, Harminder Pal; Kaur, Shalinder; Batish, Daizy R.; Kohli, Ravinder Kumar
Source:
Environmental science and pollution research international 2019 v.26 no.1 pp. 456-463
ISSN:
0944-1344
Subject:
coleoptiles,   etc   ; Zea mays; beta-pinene; chromium; corn; electrolytes; enzymes; hydrogen peroxide; neutralization; phytotoxicity; protective effect; superoxide anion;     Show all 12 Subjects
Abstract:
... We examined the possible role of monoterpene β-pinene in providing protection against Cr(VI) toxicity in maize (Zea mays). Treatment with β-pinene (10 μM) significantly alleviated Cr(VI) accumulation and recuperated Cr(VI) caused decline in root and coleoptile growth in maize. β-Pinene addition caused a decline in Cr(VI)-induced accumulation of superoxide anion, hydroxyl ion, hydrogen peroxide and ...
DOI:
10.1007/s11356-018-3562-1

8. Tissue level distribution of toxic and essential elements during the germination stage of corn seeds (Zea mays, L.) using LA-ICP-MS

Author:
Gaiss, Shelby; Amarasiriwardena, Dulasiri; Alexander, David; Wu, Fengchang
Source:
Environmental pollution 2019 v.252 pp. 657-665
ISSN:
0269-7491
Subject:
coleoptiles,   etc   ; Zea mays; antimony; arsenic; bioaccumulation; cadmium; crops; endosperm; farms; germination; leaves; mercury; mined soils; pericarp; popcorn; roots; seeds; shoots; sustainable agriculture; tomatoes; toxicity; zinc; China;     Show all 23 Subjects
Abstract:
... Both essential and toxic metal contaminants impact agricultural crops by bioaccumulation in plants. The goal of this study was to evaluate the tissue-level spatial distribution of metal(loids) in corn seeds (Zea mays, L.) from contaminated corn fields near the Xikuangshan (XKS) antimony mine in Hunan, China, and compared them with corn (Zea mays everta L., popcorn) grown in a farm in Amherst, MA t ...
DOI:
10.1016/j.envpol.2019.05.129

9. Dissection of coleoptile elongation in japonica rice under submergence through integrated genome‐wide association mapping and transcriptional analyses

Author:
Nghi, Khac Nhu; Tondelli, Alessandro; Valè, Giampiero; Tagliani, Andrea; Marè, Caterina; Perata, Pierdomenico; Pucciariello, Chiara
Source:
Plant, cell and environment 2019 v.42 no.6 pp. 1832-1846
ISSN:
0140-7791
Subject:
coleoptiles,   etc   ; anaerobic conditions; chromosome mapping; gene expression; genes; genetic factors; genome-wide association study; genotype; germination; hypoxia; landraces; oxygen; phosphates; rice; submergence; transcription (genetics); trehalose; trehalose-phosphatase;     Show all 18 Subjects
Abstract:
... Rice is unique among cereals for its ability to germinate not only when submerged but also under anoxic conditions. Rice germination under submergence or anoxia is characterized by a longer coleoptile and delay in radicle emergence. A panel of temperate and tropical japonica rice accessions showing a large variability in coleoptile length was used to investigate genetic factors involved in this de ...
DOI:
10.1111/pce.13540

10. Facile synthesis of anhydrojudaicin and 11,13-dehydroanhydrojudaicin, two eudesmanolide-skeleton lactones with potential allelopathic activity

Author:
Zorrilla, Jesús G.; Rial, Carlos; Varela, Rosa M.; Molinillo, José M.G.; Macías, Francisco A.
Source:
Phytochemistry letters 2019 v.31 pp. 229-236
ISSN:
1874-3900
Subject:
coleoptiles,   etc   ; Amaranthus viridis; Echinochloa crus-galli; Megathyrsus maximus; Orobanchaceae; agrochemicals; allelopathy; benzoquinones; bioassays; germination; lactones; oxidation; parasitic plants; phytotoxicity; seeds; weeds; wheat;     Show all 17 Subjects
Abstract:
... Natural product anhydrojudaicin (7) is a eudesmanolide that has been synthesized from costunolide (1) in three steps with good yield, simplifying procedures available in the literature. The key step was the efficient oxidation and rearrangement using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). Following the same methodology, 11,13-dehydroanhydrojudaicin (8) was prepared for the first time. Al ...
DOI:
10.1016/j.phytol.2019.04.014

11. Influence of Genotype and Harvest Time on the Cynara cardunculus L. Sesquiterpene Lactone Profile

Author:
Scavo, Aurelio; Rial, Carlos; Varela, Rosa Maria; Molinillo, José Maria Gonzalez; Mauromicale, Giovanni; Macias, Francisco Antonio
Source:
Journal of agricultural and food chemistry 2019 v.67 no.23 pp. 6487-6496
ISSN:
1520-5118
Subject:
coleoptiles,   etc   ; Cynara cardunculus; Triticum; allelochemicals; allelopathy; biopesticides; cardoons; climatic factors; genotype; harvest date; herbicides; leaves; liquid chromatography; phytotoxicity; pollution; sesquiterpenoid lactones; tandem mass spectrometry; wheat;     Show all 18 Subjects
Abstract:
... The excessive and inappropriate application of herbicides has caused environmental pollution. The use of allelochemicals as bioherbicides could provide a solution to this problem. The allelopathic activity of Cynara cardunculus L. has been studied previously, and sesquiterpene lactones (STLs) were identified as the most relevant allelochemicals. The goal of the study reported here was to investiga ...
DOI:
10.1021/acs.jafc.9b02313

12. Morphological and anatomical characteristics and temporal pattern of initial growth in Astrocaryum acaule Mart

Author:
Corrêa, Marcos Melo; de Araújo, Maria Gracimar Pacheco; de Mendonça, Maria Silvia
Source:
Flora 2019
ISSN:
0367-2530
Subject:
coleoptiles,   etc   ; Astrocaryum; fruits; germination; haustoria; leaf blade; leaf primordia; lowland forests; mesophyll; organogenesis; petioles; root systems; seedling emergence; seedlings; seeds; sowing; vermiculite; Brazil;     Show all 18 Subjects
Abstract:
... Astrocaryum acaule Mart. is a palm with underground stem, common in lowland forests, known in Brazil as tucumã-í. The objective of this work was to perform the description and characterization of seeds and of the seedling emergence process, revealing morphological and anatomical patterns of A. acaule. Seedlings were obtained by sowing in vermiculite. The seed is spherical, with variations in shape ...
DOI:
10.1016/j.flora.2019.03.005

13. Evaluation of anaerobic germinability in various rice subpopulations: identifying genotypes suitable for direct-seeded rice cultivation

Author:
Rauf, Muhammad; Choi, Yu-Mi; Lee, Sukyeung; Lee, Myung-Chul; Oh, Sejong; Hyun, Do Yoon
Source:
Euphytica 2019 v.215 no.2 pp. 19
ISSN:
0014-2336
Subject:
coleoptiles,   etc   ; alpha-amylase; anaerobic conditions; binding proteins; crop yield; direct seeding; ethylene; genetic analysis; genotype; germplasm; irrigation; loci; major genes; plant breeding; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; rice; seed germination; soil; water supply;     Show all 20 Subjects
Abstract:
... Anaerobic conditions in waterlogged soil lead to low germination rates, which significantly reduce crop yields. Good seed germination is prerequisite for direct-seeded cultivation of rice to obtain optimal yields not only in irrigated lowland but most importantly in rain-fed and waterlogged areas where water supply could be more than needed. Due to the limited availability of rice genotypes suitab ...
DOI:
10.1007/s10681-019-2341-5

14. Researches on the Influence of Low Temperatures on the Germination Capacity and Vigor of the Seeds of Wheat Varieties

Author:
Ivona, David
Source:
The Annals of "Valahia" University of Târgovişte 2017 v.11 no.2 pp. 1-5
ISSN:
2537-3137
Subject:
coleoptiles,   etc   ; Triticum aestivum; autumn; climatic factors; energy; laboratory experimentation; seed germination; seedlings; seeds; temperature; vigor; wheat;     Show all 12 Subjects
Abstract:
... Due to the fact that wheat varieties are different, they also have different temperature requirements. The present paper aims to find the most suitable seedlings that can germinate in an area with climatic conditions well below the optimum for germination of seeds. The observed temperatures were between 0 °C and 5 °C for the studied wheat varieties. The varieties analyzed were Miranda, Boema 1, Li ...
DOI:
10.1515/agr-2017-0014

15. Synthesis of tricyclic butenolides and comparison their effects with known smoke—butenolide, KAR1

Author:
Krawczyk, Ewa; Koprowski, Marek; Cembrowska-Lech, Danuta; Wójcik, Agata; Kępczyński, Jan
Source:
Journal of plant physiology 2017 v.215 pp. 91-99
ISSN:
0176-1617
Subject:
coleoptiles,   etc   ; Avena fatua; aromatic compounds; dormancy; fruits; germination; root growth; seedling growth; smoke; vigor;     Show all 10 Subjects
Abstract:
... Plant–derived smoke – butenolide, called at present karrikin 1 (KAR1) is known as an important inductor of seed germination and seedling growth. In this study, tricyclic butenolides were synthesized and their effects on germination of dormant and non–dormant Avena fatua caryopses were compared, as were also their effects versus those of KAR1 on seedling growth. KAR1 was found to be most effective ...
DOI:
10.1016/j.jplph.2017.04.021

16. Preparation and phytotoxicity study of lappalone from dehydrocostuslactone

Author:
Cárdenas, David M.; Cala, Antonio; Molinillo, José M.G.; Macías, Francisco A.
Source:
Phytochemistry letters 2017 v.20 pp. 66-72
ISSN:
1874-3900
Subject:
coleoptiles,   etc   ; Saussurea costus; acetaldehyde; allelopathy; bioassays; etiolation; inhibitory concentration 50; phytotoxicity; roots; seeds; sesquiterpenoids; wheat;     Show all 12 Subjects
Abstract:
... Lappalone, a sesquiterpene lactone isolated from the roots of Saussurea lappa, was successfully synthesized for the first time from dehydrocostuslactone following a four-step synthetic route, in which the first step was a photoaddition of acetaldehyde, with a global yield of 14%. The starting material, dehydrocostuslactone, was isolated in gram scale from Saussurea lappa root extracts. The phytoto ...
DOI:
10.1016/j.phytol.2017.04.017

17. Drought tolerance depends on the age of the spring wheat seedlings and differentiates patterns of proteinases

Author:
Miazek, A.; Nykiel, M.; Rybka, K.
Source:
Russian journal of plant physiology 2017 v.64 no.3 pp. 333-340
ISSN:
1021-4437
Subject:
coleoptiles,   etc   ; Triticum aestivum; cultivars; drought; drought tolerance; germination; phenotype; proteolysis; roots; seedlings; serine proteinases; spring wheat;     Show all 12 Subjects
Abstract:
... The majority of plant species lose their ability to tolerate severe water deficit after germination at the beginning of seedling growth, in the time of emergence of the radical from the seed. The experiment was designed to compare the differences in proteolytic response between 4-and 6-days old spring wheat (Triticum aestivum L.) seedlings of Eta cultivar, respectively tolerant and sensitive to se ...
DOI:
10.1134/S1021443717030098

18. In vitro assessment of Fusarium head blight spp. on wheat cultivars

Author:
Sakr, Nachaat
Source:
Archiv für Phytopathologie und Pflanzenschutz 2017 v.50 no.5-6 pp. 254-261
ISSN:
1477-2906
Subject:
coleoptiles,   etc   ; Fusarium head blight; cultivars; disease course; fungi; germination; in vitro studies; wheat;     Show all 8 Subjects
Abstract:
... Aggressiveness in four isolates of Fusarium head blight (FHB) species (F. culmorum , F. solani , F. verticillioides and F. equiesti) was studied in vitro on six wheat cultivars using a modified Petri-dish test. Results showed differences between cultivars inoculated with FHB isolates and control for three aggressiveness criteria: germination rate reduction, standardised area under disease progress ...
DOI:
10.1080/03235408.2017.1297032

19. Morphological and molecular evaluation for germinability in rice varieties under low-temperature and anaerobic conditions

Author:
Hyun, Do Yoon; Oh, MyeongWon; Choi, Yu-Mi; Lee, Sukyeung; Lee, Myung-Chul; Oh, Sejong
Source:
Journal of crop science and biotechnology 2017 v.20 no.1 pp. 21-27
ISSN:
1975-9479
Subject:
coleoptiles,   etc   ; anaerobic conditions; breeding; breeding programs; cultivars; direct seeding; germination; polyacrylamide gel electrophoresis; rice; vigor; Asia;     Show all 11 Subjects
Abstract:
... Direct-seeding cultivation of rice is increasing in Asia instead of transplanting system, because of its lower cost and operational simplicity. Low-temperature germinability (LTG) and anaerobic germinability (AG) are important characters for breeding of varieties for wide-spread adaptation of direct-seeding cultivation in rice. This study was performed to evaluate LTG and AG of seven rice varietie ...
DOI:
10.1007/s12892-016-0083-1

20. Greater emergence force and hypocotyl cross sectional area may improve wheat seedling emergence in sodic conditions

Author:
Anzooman, Monia; Dang, Yash P.; Christopher, Jack; Mumford, Michael H.; Menzies, Neal W.; Kopittke, Peter M.
Source:
Plant science 2018 v.277 pp. 188-195
ISSN:
0168-9452
Subject:
coleoptiles,   etc   ; Triticum aestivum; adsorption; drying; genotype; grain yield; hypocotyls; seed germination; seedling emergence; seedlings; seeds; sodic soils; sodicity; sodium; sowing; tropics; wheat;     Show all 17 Subjects
Abstract:
... Surface crusting of sodic soils is a major problem in the semi-arid tropics when rapid drying after sowing follows light showers, leading to reduced seedling emergence and grain yield. The magnitude of the force exerted by germinating seeds affects the ability of the seedlings to rupture the crust and emerge. This study aimed to determine whether the seed germination and seedling emergence force o ...
DOI:
10.1016/j.plantsci.2018.09.007