ZHAO Sisi,LIU Xingju,LI Xueyan,et al.Genetic Diversity of SSR Analysis of Pear Cultivars Based on Maturity[J].Northern Horticulture,2017,41(16):43-49.[doi:10.11937/bfyy.20170631]
基于成熟期的梨品种遗传多样性SSR分析
- Title:
- Genetic Diversity of SSR Analysis of Pear Cultivars Based on Maturity
- 关键词:
- 梨; 简单重复序列(SSR); 毛细管电泳; 成熟期; 遗传多样性
- Keywords:
- Pyrus L.; simple sequences repeat(SSR); capillary electrophoresis; maturity; genetic diversity
- 文献标志码:
- A
- 摘要:
- 以63个梨主栽品种为试材,采用SSR分子标记技术与毛细管电泳技术相结合的方法,研究了梨不同成熟期的种质资源遗传多样性,以期为梨栽培品种的品种鉴别、亲子关系鉴定、分类及系统关系研究、遗传图谱构建与标记辅助育种在分子水平上提供参考依据。结果表明:3份梨种质的观测等位基因数 (Na)平均为14.8,有效等位基因数 (Ne)平均为7.363 1,Shannon多样性指数 (I)平均为2.195,期望杂合度 (Nei)平均为0.845,说明梨总群体遗传变异偏高。依据梨系统将其分为白梨、秋子梨、日本梨、砂梨和西洋梨5个类群,其中白梨系统在Shannon多样性指数和期望杂合度上最高,分别为2.069 9和0.831 1,秋子梨系统最低,分别为0.420 8和0.303 6,白梨与砂梨类群的遗传一致度最高为0.715 2。
- Abstract:
- Sixty-three main varieties of Pyrus L.were used as experimental materials.The method of combination with SSR molecular marker technique and capillary electrophoresis technique was used to study the genetic diversity of Pyrus L.varieties in order to supply reference for breed identification,parent-child relationship identification,classification and systematic research,genetic map construction and marker-assisted breeding of Pyrus L.The results showed that,the average number of alleles (Na) was 7.363 1,the Shannon diversity index (I) was 2.195,the expected heterozygosity (Nei) average of 0.845,indicating that the total genetic variation of the pear population was high.According to the pear system,it was divided into five groups:white pear,autumn pear,Japanese pear,Chinese pear and European pear.The white pear system was the highest in Shannon diversity index and expected heterozygosity,which were 2.069 9 and 0.831 1,respectively.The lowest were respectively 0.420 8 and 0.303 6,white pear and sand pear group genetic consistency of the highest,was 0.715 2.
参考文献/References:
[1]蒲富慎,黄礼森,孙秉均,等.梨品种[M].北京:农业出版社,1989.
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备注/Memo
第一作者简介:赵思思(1991-),女,河北石家庄人,硕士研究生,研究方向为林木遗传育种。E-mail:852729371@qq.com.