نتایج جستجو برای: physiological dormancy

تعداد نتایج: 264085  

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...

2009
Hong-Mei Sun Jaime A. Teixeira da Silva Yun-Fei Li Tian-Lai Li

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...

Journal: :Annals of botany 2006
Mark K J Ooi Tony D Auld Robert J Whelan

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...

Journal: :The New phytologist 2014
Charles G Willis Carol C Baskin Jerry M Baskin Josh R Auld D Lawrence Venable Jeannine Cavender-Bares Kathleen Donohue Rafael Rubio de Casas

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...

Journal: :Genetic engineering 2006
Michael A Campbell

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...

Journal: :International Journal of Current Microbiology and Applied Sciences 2019

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....

ژورنال: یافته 2012
سمیعی, کامران, ضابطی, سید محمود, عیسوند, حمیدرضا , اسماعیلی, احمد , رضائی نژاد, عبدالحسین ,

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...

Journal: :Journal of plant physiology 2012
Xiao-Fang Li Xing-Hua Shao Xin-Jie Deng Yang Wang Xue-Ping Zhang Lin-Yan Jia Jing Xu Dong-Mei Zhang Yue Sun Ling Xu

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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