山西谷子地方品种初选核心种质构建

Core Germplasm Construction of Foxtail Millet Landrace in Shanxi

为了构建山西谷子地方品种核心种质,提高资源利用效率,采用离差平方和法进行系统聚类后随机取样,构建的初选核心种质保留了原始种质11.34%的遗传资源。分析结果显示:核心种质与原始种质表型性状均值差异百分率为5.9%,极差符合率为87.4%,方差差异百分率为35.3%,变异系数变化率为102.0%;经多样性指数t检验,表明初选核心种质能够代表原始种质的遗传多样性。

To construct core collection of foxtail millet landrace in Shanxi,improve the utilization efficiency of germplasm resources,a random sampling was conducted after system clustering by Ward’s method.11.34%of the initial collection was chose as the primary core collection.The results showed that the mean difference percentage(MD)of phenotypic traits between the core collection and initial collection was 5.9%,the coincidence rate of range(CR)was 87.4%variable rate of coefficient of variation(VR)was 102.0%.The t-test of Shannon-Weaver diversity index showed the primary core collection could represent the genetic diversity of the initial collection.