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题名: Altitudinal variations in flower and bulbil production of an alpine perennial, Polygonum viviparum L. (Polygonaceae)
作者: Fan, D. -M.1, 2; Yang, Y. -P.1
刊名: PLANT BIOLOGY
关键词: Alpine plants ; asexual and sexual reproduction ; Qinghai-Tibet Plateau ; vivipary
英文摘要: Two opposite views exist regarding sexual versus asexual reproductive performance of Polygonum viviparum. One suggests that increasing altitude favors flower production, while the other suggests that increasing altitude increases bulbil production. In this study, we present an investigation of the reproductive performance of 13 populations of P. viviparum on the Qinghai-Tibet Plateau (QTP). Our results show that, with increasing altitude, the height of inflorescence and total number of flowers and bulbils decrease significantly, but there is no significant effect on bulbil and flower number. In addition, there is a weak correlation between the proportion of flowers per population and altitude in our study sites due to the exception population 12, which is in a disturbed habitat. We conclude that more resources might be allocated to flowers in populations at higher altitudes, indicating the importance of sexual reproduction over asexual reproduction in alpine plants of QTP.
出版日期: 2009-05-01
卷号: 11, 期号:3, 页码:493-497
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 1435-8603
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3100
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China

Recommended Citation:
Fan, DM; Yang, YP.Altitudinal variations in flower and bulbil production of an alpine perennial, Polygonum viviparum L. (Polygonaceae),PLANT BIOLOGY,2009,11(3):493-497
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