匍匐茎草本金戴戴对基质盐分含量的表型可塑性(英文)

被引：15

作者：

于飞海

董鸣

张称意

张淑敏

不详

机构：

[1] 中国科学院植物研究所数量植被生态学重点实验室

[2] 中国科学院植物研究所数量植被生态学重点实验室北京

[3] 北京

来源：

植物生态学报 | 2002年 / 02期

关键词：

克隆生长; 克隆形态; 表型可塑性; 金戴戴(Halerpestes ruthenica); 盐分; 基株效应;

D O I：

暂无

中图分类号：

Q943.2 [植物基因工程];

学科分类号：

071007 ; 090102 ;

摘要：

研究了匍匐茎型克隆草本金戴戴 (Halerpestesruthenica) 4种基株 (基因型 )对不同盐分处理 (0 ,85 .5 ,171.0 ,2 5 6 .5和 34 2 .0mMNaCl)的表型可塑性。随着盐分浓度的增加 ,实验植物与生长相关的性状指标 (如植株干重、总叶面积、分株数和总匍匐茎长度 )显著减小。植株干重、总叶面积和总匍匐茎长度具有显著的基株间差异。实验植物与形态相关的性状指标 (如平均叶柄长和根冠比 )对盐分梯度具有可塑性并具有显著的基株间差异 ;而其它形态指标 (如平均节间长、比节间长和比叶柄长 )对盐分梯度和基株效应反应均不显著。同时 ,植株干重、总叶面积、分株数和总匍匐茎长度以及平均叶柄长和根冠比对盐分梯度的可塑性格局在所研究 4种基株之间存在显著的差异。结合本实验 ,对金戴戴在不同生境下的适应对策 ,以及其对盐分可塑性格局的基株间差异在种群小进化上的意义进行了讨论。

引用

页码：140 / 148

页数：9

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