紫云英的农艺性状变异  

Genetic variations of agronomic traits in Chinese milk vetch cultivars

作　　者：张贤[1] 王建红[1] 曹凯[1] 王松涛 

机构地区：[1]浙江省农业科学院环境资源与土壤肥料研究所,浙江杭州310021 [2]贵州省安顺市西秀区农业局,贵州安顺561000

出　　处：《草业科学》2013年第8期1240-1245,共6页Pratacultural Science

基　　金：国家公益性行业(农业)科研专项(201103005);浙江省重大科技专项重点农业项目(2009C12001)

摘　　要：以广泛应用的9个紫云英(Astragalus sinicus)品种为试验材料,测量其株高、干质量、粗蛋白含量等12个农艺性状,研究其农艺性状变异。结果表明,紫云英农艺性状存在较大变异,其中变异幅度最大的是分枝数,其品种内个体间差异最大,变异系数达0.310。聚类分析结果基本反映了紫云英品种的熟期,熟期相同的品种之间遗传距离较近。熟期相同的品种农艺性状相似,早熟种粤肥2号和信阳种营养生长较弱,营养成分含量亦较低,中熟种闽紫6号和闽紫7号叶长、叶宽、株高、茎粗及单株干质量等性状都明显优于其余品种。Twelve agronomic traits of nine widely used Chinese milk vetch cultivars were tested to evaluate genetic variations of these cultivars. The results showed that there was a wide range of diversity in agro- nomic characters of Chinese milk vetch oultivars. The variation of number of branche within population was the maximum, with the CV （coefficient of variation） of 0. 310, and the agronomic traits of cultivars with the same maturity were similar. Early-maturing cultivars Yuefei No. 2 and Xinyang were poor in nutrition value and vegetative growth traits. Mid-maturing cultivars Minzi No. 1 and Minzi No. 7 were superior to other cultivars in leaf characters, plant height, stem diameter, and dry matter. The dendro- gram based on Euclidean distances among cultivars reflected the relationship betureen maturity of Chinese milk vetch cultivars. Close relationships were found between cultivars with the same maturity.

关 键 词：紫云英 形态学 多样性 

分 类 号：S541.3[农业科学—作物学]