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中国特有植物艾比湖沙拐枣(Calligonum ebi-nuricum)居群内果实性状的变异
Authors
师玮
康晓珊
+3 more
张永智
段士民
潘伯荣
Publication date
1 January 2009
Publisher
Abstract
以中国荒漠特有植物艾比湖沙拐枣(Calligonum ebi-nuricum)果实形态特征为研究对象,对分布于原产区的同一居群12个样株的果实进行形态特征比较研究。通过每株30粒果实的喙长、果实长度、果实宽度、果实形状、瘦果长度、瘦果宽度、瘦果形状、刺毛长度、头部刺毛长度、两肋间距、两刺间距11个性状指标的数值分析表明:在株内与株间均有变异,株间果实性状变异较株内果实性状变异大;代表果实和瘦果大小指标正相关性极显著(p<0.01);两肋间距与瘦果形状呈负相关(r=-0.297**,p<0.01)。研究结果证明:其果实形状和瘦果形状(长度、宽度及长宽比)较为稳定,可作为艾比湖沙拐枣的分种依据,而其它果实性状可塑性较大,只能作为分类的参考。该研究结果可供沙拐枣属其它种的准确分类参考
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Last time updated on 29/11/2016