检索结果-南通市图书馆

Support for the predictions of the pollinator-mediated stabilizing selection hypothesis

Journal of Plant Ecology 2008年第3期1卷 173-178页

作者： Mark van Kleunen Anna Meier Moritz Saxenhofer Markus Fischer Institute of Plant Sciences University of BernAltenbergrain 21CH-3013 BernSwitzerland

Aims floral traits are frequently used in traditional plant systematics because of their assumed *** potential reason for the apparent constancy of flower size is that effective pollen transfer between flowers depends on the accuracy of the physical fit between the flower and ***,flowers are likely to be under stronger stabilizing selection for uniform size than vegetative plant ***,as predicted by the pollinator-mediated stabilizing selection(PMSS)hypothesis,an accurate fit between flowers and their pollinators is likely to be more important for specialized pollination systems as found in many species with bilaterally symmetric(zygomorphic)flowers than for species with radially symmetric(actinomorphic)*** In a comparative study of 15 zygomorphic and 13 actinomorphic species in Switzerland,we tested whether variation in flower size,among and within individuals,is smaller than variation in leaf size and whether variation in flower size is smaller in zygomorphic compared to actinomorphic *** findings Indeed,variation in leaf length was significantly larger than variation in flower length and ***-individual variation in flower and leaf sizes did not differ significantly between zygomorphic and actinomorphic *** line with the predictions of the PMSS,among-individual variation in flower length and flower width was significantly smaller for zygomorphic species than for actinomorphic species,while the two groups did not differ in leaf length *** suggests that plants with zygomorphic flowers have undergone stronger selection for uniform flowers than plants with actinomorphic *** supports that the relative uniformity of flowers compared to vegetative structures within species,as already observed in traditional plant systematics,is,at least in part,a consequence of the requirement for effective pollination.

关键词： actinomorphy flower size floral symmetry phenotypic variance zygomorphy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：