河南农业科学2011，Vol.40Issue(9)：101-104,4.
韭菜种质资源初级核心库的构建与分析
Establishment and Analysis of Primary Core Collection of Leek Germplasm
摘要
Abstract
A total of 174 accessions of leeks germplasm collected from Germplasm Repository were used in this study. According to the clustering result of 15 phenotypic traits, all the accessions were divided into 14 categories when the genetic distance was 5. 3. Based on combination of simple ratio method and artificial, we established a primary core collection containing 69 accessions of leeks germplasm, which accounted for 40% of the whole collection. Compared with the whole collection, the genetic diversity index of primary core collection was higher than that of initial accessions except for plant sheath length and leaf width. Between core collection and initial collection, the mean difference percentage was 0.the variation coefficient rate was 106. 14%,and coincidence rate for range was 94. 43%. The significant correlation was found between the leaf thickness and other traits, and the leaf number and other traits were respectively missed two traits in the primary core repository. The other traits correlations were consistent with the traits correlations in total repository. The results showed that the genetic variation and genetic structure of the accessions can be well preserved in this primary core collection.关键词
韭菜/种质资源/聚类分析/初级核心库/遗传多样性Key words
Leek/ Germplasm/ Cluster analysis/ Primary core collection/ Genetic diversity分类
农业科技引用本文复制引用
王贞,张明,李延龙,曹秀敏,王利亚,杨婉玉..韭菜种质资源初级核心库的构建与分析[J].河南农业科学,2011,40(9):101-104,4.基金项目
河南省科技攻关项目(623010200) （623010200）
