Results 261 to 270 of about 3,028,573 (310)

Hydration cycles and overcoming dormancy in Butia capitata (Arecaceae) diaspores

Trees, 2021
Hydration cycles promote embryo physiological changes, favoring overcoming dormancy in Butia capitata seed banks. Dormant seeds can spend many years in soil seed banks while subject to successive hydration and dehydration cycles (HC). Our knowledge concerning the effects of HC on seed survival and on overcoming dormancy is still limited, especially ...
Jéssica Ribeiro Soares, Leonardo Monteiro Ribeiro, Maria Olívia Mercadante-Simões, Paulo Sérgio Nascimento Lopes   +3 more
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Variation between Emex australis populations in seed dormancy/non‐dormancy cycles

Australian Journal of Ecology, 1993
Abstract Seeds of four Western Australian accessions of Emex australis were stored outside and their germinability tested at 4–6 week intervals for 22 months. Accessions showed cyclical behaviour in germinability, with peaks in autumn/early winter and troughs in spring/summer.
F. D. PANETTA, R. P. RANDALL
openaire   +1 more source

Semiannual dormancy cycling results in two seedling cohorts of annual species in the cold desert of Central Asia

Journal of Ecology
Our aim was to quantify the life‐history strategies of the cold desert annual species Alyssum linifolium and Tetracme quadricornis (Brassicaceae), with particular emphasis on the seed stage.
Ruru Guo, C. Baskin, J. Baskin, Lei Wang, Huiliang Liu, Guofang Liu, X. Ye, G. Grafi, Xuejun Yang, Zhenying Huang   +9 more
semanticscholar   +1 more source

Rapid Cycling of Potato Tuber Generations by Overcoming Dormancy

American Journal of Potato Research, 2014
Dormancy hinders progress in attempts to fast track potato tuber generations. In this study, we evaluated the ability of gibberellic acid (GA) to overcome dormancy in freshly harvested tubers of 11 potato cultivars in 2 years of field trials. Tubers were wounded and dipped in 0, 10, 100, and 1,000 ppm GA.
Shelley Jansky, Andy Hamernik
openaire   +1 more source

Primary dormancy and annual dormancy cycles in seeds of six temperate wetland sedges

Aquatic Botany, 1997
Abstract The effects of dry after-ripening and burial in the soil on seed germination of six temperate wetland Carex spp. were investigated. Freshly matured seeds, seeds stored dry for 4 or 8 weeks, and seeds buried at 7-cm depth in a small woodlot, and exhumed at approximately bimonthly intervals over a 2-year period, were tested under a ...
openaire   +1 more source

Dormancy and the Cell Cycle

2006
The localization of the Kip-related proteins to meristematic regions suggests that these proteins might be associated with dormancy regulation. Additionally, the localization of chromatin remodeling to specific genes and loci may reveal the important regulation mechanisms for the dormant state.
openaire   +2 more sources

Seed Germination in Soil: Dormancy Cycles

2017
The soil seed bank consists of numerous seeds, many of which are dormant and delay germination until a later time. The persistent portion of the soil seed bank is a major source of future plants. Certain plant species emerge during the same season of each year.
openaire   +1 more source

Cell cycle inHelianthus tuberosus tuber tissue in relation to dormancy

Protoplasma, 1982
Observations are presented on the patterns of DNA synthesis and mitotic activity in medullary parenchyma cells excised from tubers ofHelianthus tuberosus in four different periods of dormancy. Dormancy break (activation) was induced byin vitro culture on media added with 2,4-dichlorophenoxyacetic acid.
A. Bennici, P. G. Cionini, D. Gennai, G. Cionini   +3 more
openaire   +1 more source

The Annual Dormancy Cycle in Buried Weed Seeds: A Continuum

BioScience, 1985
The classic studies of Brenchley and Warington (1930) and numerous other investigations have demonstrated that large reserves (pools) of weed seeds accumulate in arable soils. Work reviewed by Kropad (1966) and Roberts (1981) shows that the number of seeds per m2 in the upper 15-25 cm of soil in cultivated fields may be as high as 70,000-90,000, and up
Jerry M. Baskin, Carol C. Baskin
openaire   +1 more source

Seasonal dormancy cycles in the biennial Torilis japonica (Apiaceae), a species with morphophysiological dormancy

Seed Science Research, 2008
AbstractTorilis japonica (Apiaceae) has a widespread distribution, extending from western Europe to eastern Asia. In Europe, it usually behaves as a spring-germinating biennial species. Ripe seeds of T. japonica have an underdeveloped embryo and can persist in the soil for several years.
Filip Vandelook, Nele Bolle, Jozef A. Van Assche   +2 more
openaire   +1 more source