Variations in seed characteristics among and within Stipa purpurea populations on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Li,Xiong ; Yin,Xin; Yang,Shihai; Yang,Yunqiang; Qian,Min; Zhou,Yanli; Zhang,Chan; Du,Yan; Yang,Yongping
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| 刊名 | BOTANY
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| 出版日期 | 2015-10-01 |
| 卷号 | 93期号:10页码:651-662 |
| 关键词 | Stipa purpurea seed characteristics alpine steppe genome size Qinghai-Tibet Plateau |
| 英文摘要 | Variation in seed size is common among plant species, populations, and individuals. On the Qinghai-Tibet Plateau, previous studies have mainly focused on interspecific variation in seed size, with little information available regarding intraspecific variation. The alpine steppe is among the most important vegetation types on the plateau, where it plays a vital role in preserving landscape heterogeneity and diversity. Stipa purpurea Griseb., endemic to the Qinghai-Tibet Plateau, is the predominant species of the alpine steppe. In the present study, we measured seed characteristics of nine S. purpurea populations and analyzed possible sources and consequences of variation in these characteristics. Seed characteristics varied greatly among and within populations. Our findings suggest that variation in seed size and awn length may affect germination and dispersal, respectively. Surprisingly, environmental factors, rather than genome size, were significantly correlated with seed size. For example, relative humidity and number of windy days were strongly correlated with seed size and awn length, respectively. We believe that variation in seed characteristics is a consequence of complex environmental conditions correlated with longitude and latitude. The results indicated that variation in seed characteristics of S. purpurea is an adaptation to environmental conditions. |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | SUB-ALPINE MEADOW ; SIZE VARIATION ; COMPARATIVE ECOLOGY ; GENOME SIZE ; SOIL-TYPE ; MASS ; GERMINATION ; DISPERSAL ; PLANTS ; GROWTH |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362004100003 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/25168]  |
| 专题 | 昆明植物研究所_资源植物与生物技术所级重点实验室 |
| 推荐引用方式 GB/T 7714 | Li,Xiong,Yin,Xin,Yang,Shihai,et al. Variations in seed characteristics among and within Stipa purpurea populations on the Qinghai-Tibet Plateau[J]. BOTANY,2015,93(10):651-662. |
| APA | Li,Xiong.,Yin,Xin.,Yang,Shihai.,Yang,Yunqiang.,Qian,Min.,...&Yang,Yongping.(2015).Variations in seed characteristics among and within Stipa purpurea populations on the Qinghai-Tibet Plateau.BOTANY,93(10),651-662. |
| MLA | Li,Xiong,et al."Variations in seed characteristics among and within Stipa purpurea populations on the Qinghai-Tibet Plateau".BOTANY 93.10(2015):651-662. |
入库方式： OAI收割
来源：昆明植物研究所
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