吉林省大豆育成品种的遗传多样性分析
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S565.1

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国家大豆产业技术体系建设项目(CARS-04);吉林省农业科技创新工程重大项目(CXGC2021ZD002)


Genetic Diversity Analysis of Soybean Breeding Varieties in Jilin Province
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    摘要:

    吉林省是我国重要的大豆产区,明确吉林省大豆育成品种的遗传多样性特点,可以为本地区大豆品种选育和遗传改良提供一定的理论支撑。本研究利用14个与产量性状连锁的SSR标记,对38份吉林省审定的大豆品种进行遗传多样性分析。结果表明:14个SSR标记在38份试验材料中共检测到31个等位变异位点,平均每个位点2.214 3个,等位变异数2~4个;多态信息含量0.094 8~0.545 4,平均为0.335 7;基因多样性指数均值为0.412 1,Shannon信息指数均值为0.626 2。聚类分析38份大豆品种被划分为两个类群,其中类群II可进一步分为4个亚群;38份品种间的遗传距离在0~0.928 6,平均为0.410 7,表明供试品种的遗传多样性不够丰富。因此,在今后新品种选育过程中应当加强国外资源、地方品种、野生大豆血缘材料和不同生态区品种的利用,提高吉林省大豆品种的遗传多样性,进而推动单产持续提升。

    Abstract:

    Jilin Province is an important soybean producing area in China. A clear understanding of the genetic diversity characteristics of soybean varieties in Jilin Province can provide a certain theoretical support for the breeding and genetic improvement of soybean varieties in this region. In this study, 14 yield trait-linked SSR markers were used to analyze the genetic relationship and genetic diversity of 38 soybean varieties approved in Jilin Province. The results showed that: 14 pairs of SSR markers detected a total of 31 allelic variation sites in 38 test materials, with anaverage of 2.2143 allelic variation sites per site, and the allelic variation number was between 2 and 4; The range of polymorphism information content was 0.0948. The mean value of gene diversity index was 0.4121, and the mean value of Shannon information index was 0.6262. The test materials were divided into two groups, of which group II could be further divided into 4 subgroups; the genetic distance among the 38 varieties was between 0 and 0.9286,with an average of 0.4107, indicating that the genetic diversity among the tested varieties was not rich enough.Therefore, in the future breeding of new varieties, the gene exchange between foreign resources, local varieties, wild soybean blood materials and varieties in different ecological regions should be strengthened to improve the genetic diversity of soybean varieties in Jilin Province, thereby promoting the continuous improvement of yield per unit area.

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雷蕾,刘浩,崔卓灵,张万年,李志刚,赵丽梅,邱红梅,张春宝.吉林省大豆育成品种的遗传多样性分析[J].东北农业科学,2022,47(3):1-4,20.

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  • 收稿日期:2021-05-16
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  • 在线发布日期: 2024-11-09
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