Lack of divergence in seed ecology of two amphicarpaea (fabaceae) species disjunct between eastern asia and eastern north america
文献类型：期刊论文
| 作者 | Zhang, Keliang1,4; Baskin, Jerry M.2; Baskin, Carol C.2,3; Yang, Xuejun1; Huang, Zhenying1 |
| 刊名 | American journal of botany
 |
| 出版日期 | 2015-06-01 |
| 卷号 | 102期号:6页码:860-869 |
| 关键词 | Amphicarpaea bracteata Amphicarpaea edgeworthii Amphicarpy Diaspore heteromorphism Eastern asian-eastern north american disjunct distribution pattern Seed dispersal Seed dormancy Soil seed bank |
| ISSN号 | 0002-9122 |
| DOI | 10.3732/ajb.1500069 |
| 通讯作者 | Huang, zhenying(zhenying@ibcas.ac.cn) |
| 英文摘要 | Premise of the study: many congeneric species are disjunct between eastern asia and eastern north america. no previous study has compared the seed biology of closely related disjunct taxa of legumes or of a diaspore-heteromorphic species. our objective was to compare seed dormancy in two such sister species in the genus amphicarpaea (fabaceae). methods: we investigated the ecology and ecophysiology of aerial and subterranean seeds of the amphicarpic species amphicarpaea edgeworthii from china and compared the results to those published for its sister species a. bracteata from eastern north america. key results: the seed coat of aerial seeds of a. edgeworthii is well developed, whereas the seed coat of subterranean seeds is not. aerial seeds have combinational dormancy (physical dormancy [py] + physiological dormancy [pd]) broken by scarification followed by cold stratification or by after-ripening and scarification; whereas subterranean seeds have pd broken by cold stratification. aerial seeds formed a persistent soil seed bank, and subterranean seeds a transient soil seed bank. aerial seeds of a. bracteata also have py+pd and subterranean seeds pd. subterranean seeds of both species are desiccation intolerant. conclusion: dormancy in neither aerial nor subterranean seeds of both species has diverged over geological time. compared to subterranean seeds, aerial seeds of both species dispersed over longer distances. seed dispersal ability and degree of dormancy of neither species fits the high-risk/low-risk (h-h/l-l) strategy found in many diaspore-dimorphic species. rather, both species have an h-l/l-h strategy for these two life history traits. |
| WOS关键词 | GERMINATION ECOPHYSIOLOGY ; HETEROTHECA-LATIFOLIA ; ACHENE DIMORPHISM ; PLANTS ; DORMANCY ; DISPERSAL ; BRACTEATA ; TERTIARY ; HETEROMORPHISM ; CONSEQUENCES |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000356600800005 |
| 出版者 | BOTANICAL SOC AMER INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376409 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Huang, Zhenying |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Kentucky, Dept Biol, Lexington, KY 40506 USA 3.Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY 40546 USA 4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Keliang,Baskin, Jerry M.,Baskin, Carol C.,et al. Lack of divergence in seed ecology of two amphicarpaea (fabaceae) species disjunct between eastern asia and eastern north america[J]. American journal of botany,2015,102(6):860-869. |
| APA | Zhang, Keliang,Baskin, Jerry M.,Baskin, Carol C.,Yang, Xuejun,&Huang, Zhenying.(2015).Lack of divergence in seed ecology of two amphicarpaea (fabaceae) species disjunct between eastern asia and eastern north america.American journal of botany,102(6),860-869. |
| MLA | Zhang, Keliang,et al."Lack of divergence in seed ecology of two amphicarpaea (fabaceae) species disjunct between eastern asia and eastern north america".American journal of botany 102.6(2015):860-869. |
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来源：中国科学院大学
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