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蒙古沙拐枣(Calligonum mongolicum)与其相关种的果实形态差异性分析/Difference of Fruit Morphological Characters of Calligonum mongolicum and Related Species[J]
Authors
DUAN Shi-min
KANG Xiao-shan
+8 more
PAN Bo-rong
SHI Wei
中国科学院,新疆生态与地理研究所,吐鲁番沙漠植物园,新疆,乌鲁木齐,830011
中国科学院研究生院,北京,100049
师玮
康晓珊
段士民
潘伯荣
Publication date
1 January 2011
Publisher
Abstract
在野外考察和实验室工作相结合的基础上,以沙拐枣属(Calligonum L.)主要的分类学依据--果实形态为对象,研究了在分类学上具有争议的蒙古沙拐枣(C.mongolicum)和其相关种[戈壁沙拐枣(C.gobicum)、甘肃沙拐枣(C.chinense)、小沙拐枣(C.pumilum)、阿拉善沙拐枣(C.alashanicum)、柴达木沙拐枣(C.zaidamense)、塔里木沙拐枣(C.roborowskii)]的分类学关系.其果实形状、果实长度、果实果宽、刺毛长度、两刺间距、两肋间距、瘦果形状、瘦果长度、瘦果宽度、每肋刺行数、果实大小,共11个果实性状指标都在不同居群间表现出不同程度的变异.果实性状在蒙占沙拐枣不同居群之间的差异均达到极显著,在蒙古沙拐枣及其相关种的各居群之间也达到极显著.果实性状聚类分析的结果表明,地理距离比较近的居群可聚为一支.蒙古沙拐枣和其相关种之间的果实性状平行呈现,形成复杂的多形交叉现象.基于以上的研究结果.建议将6个相关种归并于蒙古沙拐枣
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Last time updated on 29/11/2016