Dormancy cycling and persistence of seeds in soil of a cold desert halophyte shrub
文献类型：期刊论文
| 作者 | Cao, Dechang1; Baskin, Carol C.; Baskin, Jerry M.; Yang, Fan1; Huang, Zhenying
|
| 刊名 | ANNALS OF BOTANY
 |
| 出版日期 | 2014 |
| 卷号 | 113期号:1页码:171-179 |
| 关键词 | Cold desert habitat dormancy cycling halophyte Kalidium gracile salt tolerance seed germination seedling recruitment soil seed bank |
| ISSN号 | 0305-7364 |
| DOI | 10.1093/aob/mct256 |
| 文献子类 | Article |
| 英文摘要 | Formation of seed banks and dormancy cycling are well known in annual species, but not in woody species. In this study it was hypothesized that the long-lived halophytic cold desert shrub Kalidium gracile has a seed bank and dormancy cycling, which help restrict germination to a favourable time for seedling survival. Fresh seeds were buried in November 2009 and exhumed and tested for germination monthly from May 2010 to December 2011 over a range of temperatures and salinities. Germination recovery and viability were determined after exposure to salinity and water stress. Seedling emergence and dynamics of the soil seed bank were investigated in the field. Seeds of K. gracile had a soil seed bank of 7030 seedsm(2) at the beginning of the growing season. About 72 of the seeds were depleted from the soil seed bank during a growing season, and only 14 of them gave rise to seedlings that germinated early enough to reach a stage of growth at which they could survive to overwinter. About 28 of the seeds became part of a persistent soil seed bank. Buried seeds exhibited an annual non-dormancy/conditional dormancy (ND/CD) cycle, and germination varied in sensitivity to salinity during the cycle. Dormancy cycling is coordinated with seasonal environmental conditions in such a way that the seeds germinate in summer, when there is sufficient precipitation for seedling establishment. Kalidium gracile has three life history traits that help ensure persistence at a site: a polycarpic perennial life cycle, a persistent seed bank and dormancy cycling. The annual ND/CD cycle in seeds of K. gracile contributes to seedling establishment of this species in the unpredictable desert environment and to maintenance of a persistent soil seed bank. This is the first report of a seed dormancy cycle in a cold desert shrub. |
| 学科主题 | Plant Sciences |
| 出版地 | OXFORD |
| 电子版国际标准刊号 | 1095-8290 |
| WOS关键词 | SEEDLING EMERGENCE ; DIMORPHIC SEEDS ; GERMINATION ; BANKS ; DYNAMICS ; ECOLOGY ; ANNUALS ; CYCLES ; PLANTS |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000329063300021 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Key Basic Research and Development Plan of China [2012BAD16B03, 2010CB951304] ; National Natural Science Foundation of P. R. China [30872074] ; Joint Project of Ministry of Environmental Protection of P.R. China ; Chinese Academy of Sciences [STSN-21-04] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/27098]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Baskin, Carol C.; Baskin, Jerry M.] Univ Kentucky, Dept Biol, Lexington, KY 40546 USA 4.Baskin, Carol C.] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA |
| 推荐引用方式 GB/T 7714 | Cao, Dechang,Baskin, Carol C.,Baskin, Jerry M.,et al. Dormancy cycling and persistence of seeds in soil of a cold desert halophyte shrub[J]. ANNALS OF BOTANY,2014,113(1):171-179. |
| APA | Cao, Dechang,Baskin, Carol C.,Baskin, Jerry M.,Yang, Fan,&Huang, Zhenying.(2014).Dormancy cycling and persistence of seeds in soil of a cold desert halophyte shrub.ANNALS OF BOTANY,113(1),171-179. |
| MLA | Cao, Dechang,et al."Dormancy cycling and persistence of seeds in soil of a cold desert halophyte shrub".ANNALS OF BOTANY 113.1(2014):171-179. |
入库方式： OAI收割
来源：植物研究所
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