摘要
利用20个表型性状和40个SSR标记,对我国东北18份水稻选育品种和13份日本引进品种的遗传多样性,共检测到82个表型变异和108个SSR等位基因,其中中国东北水稻品种表型变异数和SSR等位基因数分别为72和103个(平均2.54个),日本引进品种表型变异数和等位基因数分别为63和94个(平均2.32个)。遗传变异主要存在于品种间(95%),群体之间(5%)差异较小,聚类分析将供试材料分为5类,日本引进品种没有形成独立的类群。中国东北选育水稻品种的遗传多样性高于日本引进品种,并且保留了日本品种94.7%的等位变异。日本水稻品种中可利用的特异等位基因十分有限,已经不能满足东北地区水稻育种发展的需求。
The genetic diversity of 18 rice varieties from northeast China and 13 rice varieties from Japan were investigated by 20 phenotypic traits and SSR assay with 40 pairs of primers.The results showed that 82 phenotypic variation and 108 alleles were detected.With an average of 2.54 alleles on every locus the phenotypic variation and alleles in northeast China were 72 and 103,respectively,and 63 and 94 were respectively with an average of 2.32 alleles on every locus in Japanese varieties.Genetic variation among different varieties varied greatly and among different groups varied slightly.Genetic diversity of varieties in northeast China was much higher than those in Japan,and 94.7% of the alleles from Japanese varieties were included in the varieties from northeast China.The available specific alleles were already very limited in the varieties from Japan and can not meet the rice breeding requirements for northeastern China.
出处
《核农学报》
CAS
CSCD
北大核心
2011年第6期1082-1087,共6页
Journal of Nuclear Agricultural Sciences
基金
辽宁省自然科学基金(20052118)
辽宁省高等学校优秀人才支持计划(2006R48)
黑龙江八一农垦大学博士启动基金(校启B2011-04)
