【摘要】 对15份紫花苜蓿(Medicago sativa)种质的14个形态学性状进行研究,结果表明,1)不同种质紫花苜蓿的植物形态学特征存在广泛变异,其中以分枝数变异最大(32.58%),荚果长(27.21%)次之,而小花长变异最小(10.47%);2)变异系数与主成分分析结果显示,分枝数、荚果长、主枝侧枝数、花序长和荚果数5个性状是造成紫花苜蓿种质表型差异的主要因素;3)以14个形态性状为基础的聚类分析将供试的15份种质材料分为两类。形态学变异研究可为种质育种奠定一定的基础。更多还原

【Abstract】 Phenotype variation for 14morphologic traits of 15 Medicago sativa accessions were analyzed.The results showed that there were extensive variations in morphology.The most significant variance lay in branch number(32.58%),followed by pod length(27.21%),and floret length(10.47%)was the least.Mean while,coefficient of variation and principal component analysis showed that five characters including branch number,pod length,lateral branch number,panicle length and pod number were main factors which produced morphological variation of M.sativa.Based on the morphological traits,cluster analysis showed that all 15accessions of M.sativa had been divided into two parts.更多还原