黄淮麦区部分小麦种质资源农艺性状的聚类分析  

Cluster Analysis of Some Wheat Germplasms in Huang-Huai Area Based on Agronomic Traits

作　　者：王林海[1] 王晓伟[1] 詹克慧[1] 马东钦[1] 许兰杰[1] 

机构地区：[1]河南农业大学农学院,郑州450002

出　　处：《中国农学通报》2008年第4期186-191,共6页Chinese Agricultural Science Bulletin

基　　金：国家高技术研究与发展计划(863)项目"优质高产多高抗专用小麦分子与细胞品种创制"(2006AA100102);河南省重大科技攻关项目"超级小麦新品种的选育与示范"(0520010101)

摘　　要：小麦遗传资源是小麦育种的重要基础,对小麦遗传多样性的研究不仅有助于种质资源的搜集、管理和利用,也有利于进行核心种质的研究。为了解黄淮麦区种质资源在农艺性状上的遗传多样性,对130份品种(系)的24个农艺性状进行了鉴定。结果表明:24个农艺性状具有较大的变异潜力,在12个数量性状中,变异系数最大的是穗下空节,为48.267,其次是叶夹角,为45.355;变异系数最小的是株高,为8.934。该群体间的欧氏距离变化在2.281～14.242之间,平均值为6.599。聚类分析在欧氏距离为9.200处把供试材料分为10组,各组具有一定的特点,有利于育种亲本选择。Wheat genetic resources are very important for breeding program. The study of wheat genetic diversity is benificial to other researches, including the collection, management and utilization of wheat genetic resources, and the research and establishment of core germplasm. In this paper, 24 agronomic traits were measured to study the diversity of 130 wheat accessions from Huang-Huai area, and the aim was to provide more useful information about wheat genetic resources for breeders. The results showed that 130 piece of accessions had a relatively wide variation in the 24 agronomic traits. Among 12 quantity traits, bare joint under spike had the greatest coefficient of variation, which was 48.267, and the next was the angle between leaf and stem, which was 45.355. The smallest coefficient of variation was 8.934 for plant height. Euclidean distances between the accessions varied from 2.281 to 14.242 with the average of 6.599. Cluster analysis classed these materials into 10 groups, and each group had its respective character.

关 键 词：小麦 黄淮麦区 种质资源 农艺性状 聚类分析 欧氏距离 

分 类 号：S512.1[农业科学—作物学]