Results 311 to 320 of about 57,284 (348)

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.
Jozef A. Van Assche, Nele Bolle, Filip Vandelook   +2 more
openaire   +2 more sources

The Role of Temperature on the Dormancy Cycle of Seeds of Rumex obtusifolius L.

Functional Ecology, 1989
Seeds of Rumex obtusifolius L. were buried at different depths in bare soil, under a grass turf and under shrubs. The temperature was measured daily at seed level. During 3 years, monthly samples were exhumed and the germination was tested at different temperature regimes. The dormancy levels follow a seasonal pattern.
J. A. Van Assche, K. A. Vanlerberghe
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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   +2 more sources

Perennial Life Style of Populus: Dormancy Cycling and Overwintering

2009
Deciduous trees in boreal and temperate areas are strictly conditioned by the environment, especially by photoperiod and temperature. However, it is in particular the successful submission to these conditions that has rewarded them with long-life spans.
Päivi L.H. Rinne, Annikki Welling, Chris van der Schoot   +2 more
openaire   +2 more sources

Dormancy/Nondormancy Cycles in Spores of the Liverwort Sphaerocarpos texanus

The Bryologist, 1999
The presence of a dormancy/nondormancy cycle was investigated in spores of the winter, annual, liverwort, Sphaerocarpos texanus. To test for loss of dormancy, mature laboratoryderived spores were held at three daily alternating incubation temperature regimes (thermoperiods) of 35/20, 30/15, and 25/15?C.
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Sensitivity cycling and its ecological role in seeds with physical dormancy

Seed Science Research, 2009
AbstractCycling of physically dormant (PY) seeds between states insensitive and sensitive to dormancy-breaking factors in the environment has recently been demonstrated inFabaceaeandConvolvulaceae, and it may be a common phenomenon in seeds with water-impermeable seed coats.
K. M. G. Gehan Jayasuriya, Carol C. Baskin, Jerry M. Baskin   +2 more
openaire   +2 more sources

The Banjhi (Dormancy) Cycle in Tea (camellia sinensis)

Experimental Agriculture, 1981
SUMMARYThe ‘banjhi’ or dormancy cycle in free-growing tea trees appears to be the result of an endogenous rhythm. However, in harvested tea apical dominance causes dormant shoots to be produced under conditions favourable to growth, and the synchronized flushing cycle causes periods of apical shoot (active terminal bud) and secondary shoot (dormant ...
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Production of Seed Samples for the Effective Molecular Analysis of Dormancy Cycling in Arabidopsis

2011
Most often, the samples used for molecular analysis of dormancy are populations of seeds. An essential survival characteristic of seed populations inhabiting the variable surface layers of the soil is that individuals in the population do not behave uniformly. In addition, seed dormancy (SD) status of the whole population constantly changes even in the
William E. Finch-Savage, Steven Footitt
openaire   +3 more sources

Depth of dormancy in tomato (Lycopersicon esculentum Mill.) seeds is related to the progression of the cell cycle prior to the induction of dormancy

Seed Science Research, 2001
Cell cycle activities are initiated following imbibition of non-dormant seeds. However, it is not known whether cell cycle related events other than DNA replication also remain suppressed in imbibed dormant seeds. The objective of this study was to demonstrate that the transitions between the non-dormant and dormant (both primary and secondary) states ...
Renato Delmondez de Castro, Henk W. M. Hilhorst, Raoul J. Bino, Hai-Chun Jing, Henk Kieft   +4 more
openaire   +2 more sources

Dormancy cycle and viability of buried seeds of Papaver rhoeas

Weed Research, 2006
SummarySeeds of three Spanish Papaver rhoeas populations (two resistant to both tribenuron‐methyl and 2,4‐dichlorophenoxyacetic acid and one susceptible to both herbicides) were buried at 2, 8 and 20 cm depth in Lleida (Catalonia, Spain). At various intervals up to 77 months they were exhumed and tested for germination in an agar medium and for ...
Jordi Recasens, Alicia Cirujeda, A. Taberner   +2 more
openaire   +2 more sources