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Timing of seed germination in two alpine herbs on the southeastern Tibetan plateau: the role of seed dormancy and annual dormancy cycling in soil

文献类型：期刊论文

作者Wang, Guoyan4; Baskin, Carol C.; Baskin, Jerry M.; Yang, Xuejun; Liu, Guofang; Zhang, Xinshi; Ye, Xuehua; Huang, Zhenying
刊名PLANT AND SOIL
出版日期2017
卷号421期号:1-2页码:465-476
关键词Buried seeds Light sensitivity Local adaptation Pedicularis fletcheri Physiological dormancy Primula alpicola Secondary dormancy
ISSN号0032-079X
DOI10.1016/j.envexpbot.2017.02.006
文献子类Article
英文摘要Germination timing strongly affects the probability of seedling survival and the conditions for subsequent plant growth and reproduction. For alpine species, timing of germination should be restricted to a period that ensures seedlings will attain a critical size during the short growing season and thus survive winter. Thus, we hypothesized that seeds of herbaceous alpine perennials germinate only at the beginning of the growing season in spring, when temperatures are low, and the seed dormancy mechanism helps synchronize the germination event to the beginning of the growing season. Seed traits and effects of light, temperature, cold stratification and GA(3) on germination of Primula alpicola and Pedicularis fletcheri were tested in the laboratory and germination responses to temperature of seeds buried in the field at 4500 m a.s.l. and exhumed over a 2-year period were investigated. Fresh seeds were dormant, and cold stratification and GA(3) overcame dormancy in seeds of both species and the light requirement for germination of P. alpicola seeds. Buried seeds of both species exhibited an annual dormancy/nondormancy/dormancy cycle. Seeds of P. alpicola and P. fletcheri have nondeep physiological dormancy and dormancy cycling. Dormancy cycling was coordinated with seasonal environmental conditions, and seeds germinated soon after snowmelt in late spring. This is the first comprehensive demonstration of regulation of germination timing by dormancy cycling in alpine plants.
学科主题Plant Sciences ; Environmental Sciences & Ecology
出版地DORDRECHT
电子版国际标准刊号1573-5036
WOS关键词GLACIER FORELAND ; SEASONAL-CHANGES ; BURIED SEEDS ; ESTABLISHMENT ; STRATEGIES ; EMERGENCE ; RESPONSES ; RECRUITMENT ; SURVIVAL ; GROWTH
语种英语
WOS记录号WOS:000398752400015
出版者SPRINGER
资助机构National Natural Science Foundation of P. R. ChinaNational Natural Science Foundation of China (NSFC) [31570416, 31370705, 31560153]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/22171]  
专题植被与环境变化国家重点实验室
作者单位1.Baskin, Carol C.; Baskin, Jerry M.] Univ Kentucky, Dept Biol, Lexington, KY 40506 USA
2.Baskin, Carol C.] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Guoyan,Baskin, Carol C.,Baskin, Jerry M.,et al. Timing of seed germination in two alpine herbs on the southeastern Tibetan plateau: the role of seed dormancy and annual dormancy cycling in soil[J]. PLANT AND SOIL,2017,421(1-2):465-476.
APA Wang, Guoyan.,Baskin, Carol C..,Baskin, Jerry M..,Yang, Xuejun.,Liu, Guofang.,...&Huang, Zhenying.(2017).Timing of seed germination in two alpine herbs on the southeastern Tibetan plateau: the role of seed dormancy and annual dormancy cycling in soil.PLANT AND SOIL,421(1-2),465-476.
MLA Wang, Guoyan,et al."Timing of seed germination in two alpine herbs on the southeastern Tibetan plateau: the role of seed dormancy and annual dormancy cycling in soil".PLANT AND SOIL 421.1-2(2017):465-476.

入库方式： OAI收割

来源：植物研究所

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