中国科学院昆明植物研究所机构知识库
Advanced  
KIB OpenIR  > 中国科学院青藏高原研究所昆明部  > 期刊论文
题名: Reproductive allocation in a dioecious perennial Oxyria sinensis (Polygonaceae) along altitudinal gradients
作者: Zhao, Fang1, 2; Yang Yongping(杨永平)1
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: dioecy ; Oxyria sinensis ; reproductive allocation
英文摘要: The reproductive allocation (RA, the ratio of flower biomass to total aboveground biomass) of Oxyria sinensis Hemsl., a clonal dioecious perennial, was compared among five populations along an altitudinal gradient from 1978 in to 2780 in. The goal of this study is to answer the following questions: (1) What is the variation in the reproductive allocation of O. sinensis? (2) Does variation in reproductive allocation correspond to an altitudinal gradient? (3) Is the reproductive allocation of male and female O. sinensis correlated to environmental factors? We found that reproductive allocation to ramets decreased with increasing vegetative biomass in both male and female plants. Increasing altitude corresponds to a decrease in height of ramets, total aboveground biomass, and biomass of vegetative organs in both male and female plants. The total aboveground biomass of male ramets was significantly higher than female ramets in the populations at the altitudes of 2422 in and 2780 in. The biomass of flowers and reproductive allocation of male ramets were significantly higher than of female ramets at all populations except at the lowest altitude population, which indicated male ramets allocate more biomass to reproduction than female ramets. Our results do not support the idea of an invariable minimum vegetative biomass for reproduction, probably because resource can be shared among ramets within one ramet system of a clonal species, and the pattern of RA in O. sinensis might be an adaptation to the unpredictable rain and decreased pollinator visitation in the higher altitudinal populations.
中文摘要: The reproductive allocation (RA, the ratio of flower biomass to total aboveground biomass) of Oxyria sinensis Hemsl., a clonal dioecious perennial, was compared among five populations along an altitudinal gradient from 1978 in to 2780 in. The goal of this study is to answer the following questions: (1) What is the variation in the reproductive allocation of O. sinensis? (2) Does variation in reproductive allocation correspond to an altitudinal gradient? (3) Is the reproductive allocation of male and female O. sinensis correlated to environmental factors? We found that reproductive allocation to ramets decreased with increasing vegetative biomass in both male and female plants. Increasing altitude corresponds to a decrease in height of ramets, total aboveground biomass, and biomass of vegetative organs in both male and female plants. The total aboveground biomass of male ramets was significantly higher than female ramets in the populations at the altitudes of 2422 in and 2780 in. The biomass of flowers and reproductive allocation of male ramets were significantly higher than of female ramets at all populations except at the lowest altitude population, which indicated male ramets allocate more biomass to reproduction than female ramets. Our results do not support the idea of an invariable minimum vegetative biomass for reproduction, probably because resource can be shared among ramets within one ramet system of a clonal species, and the pattern of RA in O. sinensis might be an adaptation to the unpredictable rain and decreased pollinator visitation in the higher altitudinal populations.
出版日期: 2008-11-01
卷号: 46, 期号:6, 页码:830-835
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0529-1526
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2647
Appears in Collections:中国科学院青藏高原研究所昆明部_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
20110802009.pdf(612KB)----开放获取--View Download

作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Zhao, F; Yang, YP.Reproductive allocation in a dioecious perennial Oxyria sinensis (Polygonaceae) along altitudinal gradients,JOURNAL OF SYSTEMATICS AND EVOLUTION,2008,46(6):830-835
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhao, Fang]'s Articles
[Yang, Yong-Ping]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhao, Fang]‘s Articles
[Yang, Yong-Ping]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 20110802009.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院昆明植物研究所 - Feedback
Powered by CSpace