摘要： 为核不育亚麻资源的有效利用提供依据，构建了核不育亚麻核心种质库。以78份核不育亚麻资源材料为研究材料，通过10个农艺性状的形态学观察、RAPD标记和聚类分析，采用随机抽样和最大遗传距离法结合的策略，构建了由22个材料组成的核心种质库。通过各性状的均值、方差、变幅及变幅保持率等进行评价。结果表明，根据10个农艺性状聚类分析结果，将78份不育亚麻种质资源，可分为8个类群，其欧氏距离在0．3940—10．7091之间，均值为4．0500。而根据RAPD遗传多样性分析结果，将其可分为3个类群，其遗传相异系数在0．013～0．897之间，均值为0．361。构建的核不育亚麻核心种质库基本上能够代表原有种质资源的遗传多样性。

关键词: 显性核不育亚麻, 种质资源, 聚类分析, 核心种质, 遗传多样性

Abstract: Based on morphological markers, RAPD markers and the cluster analysis, a core collection comprised of 22 samples from 78 flax germplasm was developed, using stratigy ofrandom sampling and max-distance combined. Mean value, variance, amplitude and range maintenance were used to test the validity sampling scheme. The 78 male sterile flax germplasms were classified into 8 groups according to 10 morphological characteristics cluster analysis in which euclidean distance ranged betwen 0. 394 0 and 10. 709 1,with means of 4.05. While RAPD genetic diversity analysis devided the germaplasms into 3 groups,with genetic difference coefficent ranging from 0. 013 to 0. 897, and means being 0. 361. Sampling validity test showed that the core collection of the genie male sterile flax could well represent the genetic diversity of the whole collection.

Key words: Dominant genie male sterile flax, Germplasm resources, Genetic diversity, Cluster analysis, Core collection

中图分类号: 

• S563.2