白三叶种质资源主要数量性状的变异与相关性研究

为了探讨白三叶(Trifolium repens L.)种质资源农艺性状变异和相关性，揭示各种质材料的特征特性和种质资源群间的遗传关系，本研究对78份白三叶种质的12个主要数量性状的变异和相关性进行了分析。结果表明：这些种质材料存在着丰富的遗传多样性，各个数量性状间均呈正相关，植株高度与小叶长度、小叶宽度、小叶大小、叶柄长度呈显著正相关；小叶长度与小叶宽度、小叶大小呈极显著正相关，与叶柄长度、叶柄直径呈显著正相关；小叶宽度与小叶大小呈极显著正相关，与叶柄长度、花柄直径呈显著正相关；小叶大小与叶柄长度、叶柄直径、花柄直径呈显著正相关。该批种质材料能为各类白三叶育种和遗传研究提供较为丰富的亲本材料。

Study of the Major Quantitative Character Difference and Theirs Correlations among Germplasm Resources of Trifolium repens L.

To discuss the difference and correlation analysis on the main agronomic traits for Trifolium repens L.germplasm resources to reveal characteristics and genetic relationship among white clover germplasm resources.The difference and correlation analysis of 12 main quantitative character of 78（Trifolium repens L.） was carried out.The results indicated that which have the abundant genetic diversity among the varieties,between to each of quantitative characters were positively correlated.The plant height was positively correlated with leaf length,width,size and petiole length;the leaf length was significantly and positively correlated with leaf width and size,which was positively correlated with petiole length and diameter;the leaf width was significantly and positively correlated with leaf size,which was positively correlated with petiole length and diameter of flower handle;the leaf size was positively correlated with petiole length,petiole diameter and diameter of flower handle.This group of white clover germplasm materials could provided rich parents materials for White clover breeding and genetics studies.