摘要
结合数量统计分析对扁蓿豆14个居群的14项形态特征进行了研究,结果表明:除叶长、荚果长、荚果宽、荚果形状、种子长和千粒重以外,其余形态性状在居群间或居群内都表现显著差异;以14个形态性状为基础的聚类分析将所研究的14个居群分为4类;主成分分析结果显示株高、叶面积、花序结荚数、花序种子数和种子宽等5个性状是造成扁蓿豆表型差异的主要因素.
By using the method of numerical statistics, morphological variation of Medicago ruthenica has been studied. The results show：inter-/intro-population variation occurred remarkably in most morphological characters except for numbers of length of leaf,pod length,pod width,pod shape,seed length and 1 000- seed weight. Based on the 14 morphological characters, cluster analysis showed that, 14 populations of Medicago ruthenica have been divided into 4 parts. Principal component analysis showed that five characters including plant height,area of leaf,number of flowers/pod, number of seeds/raceme and seed width are mainly factors which produced morphological variation of Medicago ruthenica.
出处
《西北植物学报》
CAS
CSCD
北大核心
2009年第5期1001-1006,共6页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家十一五"科技支撑(2008BADB3B01)
农业部农作物种质资源保护项目(NB07-2130135-42)
关键词
扁蓿豆
形态变异
居群
聚类分析
主成分分析
Medicago ruthenica
morphological variation
populations
cluster analysis
principal components analysis
