整合质量数量性状构建作物核心种质的策略研究

被引:13
作者
徐海明
李晓玲
李金泉
刘桂富
胡晋
机构
[1] 浙江大学农学系
[2] 华南农业大学广东省植物分子育种重点实验室
关键词
核心种质; 质量性状; 数量性状; 多样性; 种质资源;
D O I
暂无
中图分类号
S330 [作物遗传育种];
学科分类号
摘要
质量性状和数量性状在不同水平反映了个体间的遗传差异,现有遗传相似性的度量往往割裂两者的信息.本文提出了整合质量性状和数量性状评价个体间遗传相似性的统计策略,调整的欧氏距离能有效地度量个体间的差异,并能很好地处理性状数据的缺失.实例分析了中国农业科学院、华南农学院、广东省农科院水稻生态研究室收集和调查的2262份水稻种质资源10个质量性状和15个数量性状的数据资料,用调整的欧氏距离及不加权类平均法进行群体分类,多次聚类优先取样法抽取8个不同容量的巢式子集并进行遗传多样性比较.结果表明:基于整合信息构建的核心种质同时具有较高的数量性状和质量性状遗传多样性;仅用质量性状信息不足以评价个体间的遗传差异;核心种质构建中应该采用数量性状的信息,同时整合质量性状的信息.
引用
收藏
页码:362 / 367
页数:6
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