【摘要】 本研究以14个地点的白车轴草种质为材料，采用变异分析、相关性分析、主成分分析方法对白车轴草株高、叶长、叶宽等6个表型性状进行分析与评价。结果表明，14个种质的6个表型性状变异系数范围为15.33%～38.62%,其中茎长变异最显著，表明其具有遗传改良潜力。相关性分析发现，株高与叶长、叶宽等营养性状呈极显著正相关。主成分分析提取出3个主成分，累计贡献率81.795%,反映了营养生长、繁殖等关键特征。本研究为白车轴草优良种质的选育与利用提供了理论依据。更多还原

【Abstract】 Trifolium repens collected from 14 locations was taken as the object in this study. Six phenotypic traits such as plant height, leaf length, and leaf width were analyzed and evaluated by variation analysis, correlation analysis, and principal component analysis. The results showed that the coefficient of variation of 6 phenotypic traits of 14 germplasms ranged from 15.33 % to 38.62 %. The stem length variation was the most significant. That indicated that it had the potential for genetic improvement. Correlation analysis showed that plant height was very significantly positively correlated with nutritional traits such as leaf length and leaf width. Three principal components reflecting key characteristics such as nutritional growth and reproduction were extracted by principal component analysis, and the cumulative contribution rate was 81.795 %. This study would provide the theoretical basis for the breeding and utilization of excellent germplasm of Trifolium repens.更多还原