نتایج جستجو برای: physiological dormancy
تعداد نتایج: 264085 فیلتر نتایج به سال:
In order to investigate different treatment effects on germination in Gundelia tournefortii, three factorial experiments were carried out in the completely randomized design with three replications. The first factor was stratification at 4oC in three levels including 0, 3 and 6 weeks, the second factor was mechanical scarification in two levels including seeds with/without scarification and the...
The mechanism of dormancy and dormancy release in lily (Lilium spp.) bulbs is still incomplete and ambiguous. Based on a summary of dormancy characteristics, we review the effects of low temperature on dormancy release. This paper highlights the metabolic changes in carbohydrates, endogenous hormones, free amino acids and phenols during low temperature storage, and the key stages in dormancy re...
BACKGROUND AND AIMS Germination studies of species from fire-prone habitats are often focused on the role that fire plays in breaking dormancy. However, for some plant groups in these habitats, such as the genus Leucopogon (Ericaceae), dormancy of fresh seeds is not broken by fire cues. In the field, these same species display a flush of seedling emergence post-fire. Dormancy and germination me...
Seed dormancy, by controlling the timing of germination, can strongly affect plant survival. The kind of seed dormancy, therefore, can influence both population and species-level processes such as colonization, adaptation, speciation, and extinction. We used a dataset comprising over 14,000 taxa in 318 families across the seed plants to test hypotheses on the evolution of different kinds of see...
Dormancy can be viewed as a complex trait that encompasses physiological and developmental responses to environmental signals. There has been considerable research and emphasis in the past on the dormancy of seeds, which is to be expected in view of the significant impact to agricultural yields, but it has only been in the last few decades that significant research success has yielded informati...
DOR: 98.1000/2383-1251.1397.5.55.9.1.1603.41 Extended abstract Introduction: Malva (Malva neglecta) is one of perennial plants of the Malvaceae family. One of the most important mechanisms for survival of the plants is dormancy, rest or distance in germination and growth; in this case, despite favorable conditions for germination, the seed remains at rest for an indefinite period of time....
Background : Myrtle is a shrub and has a many applications in medicinal industries. Although the myrtle can reproduce by cutting, its reproduction by seed will bring more advantages such as economic advantages and better regeneration in nature or agriculture. Regarding to the difficult seed germination of this plant and also the need for extension the cultivation, this study was conducted for d...
Winter dormancy has been extensively studied in many plants, while much less information is available for summer dormancy. Narcissus tazetta var. chinensis is characterized by a prolonged period of summer dormancy during the annual cycle. In the present study, we characterized the nature of dormancy in the controlled growth conditions and investigated the effects of temperature and ethylene on ...
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