| 大豆亲本间遗传距离与杂种优势的相关性研究 |
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| 引用本文： | 吴倩,李智,于伟,李杰坤,胡国玉,王大刚,黄志平.大豆亲本间遗传距离与杂种优势的相关性研究[J].中国农学通报,2020,36(1):43-48. |
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| 作者姓名： | 吴倩 李智 于伟 李杰坤 胡国玉 王大刚 黄志平 |
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| 作者单位： | 1. 安徽省农业科学院作物研究所/安徽省农作物品质改良重点实验室,合肥 230031;2. 安徽省阜阳市农业科学院,安徽阜阳 236065 |
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| 基金项目： | 国家重点研发计划课题(2016YFD0101503)；国家大豆产业技术体系(CARS-04-PS07)；安徽省科技重大专项“优质高产抗逆大豆品种选育 及绿色丰产技术研发与产业化”(18030701178)。 |
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| 摘 要： | 为提高杂交育种效率,有必要对杂种优势预测进行探索。本研究选用国内外不同地区10份材料,按NCⅡ不完全双列杂交法组配45个杂交组合,利用SSR分子标记遗传距离预测大豆亲本间杂种优势。结果表明：10份亲本中检测到417个多态性等位基因变异,多态性位点变化范围为2~5个,遗传相似系数(GS)变幅为0.520~0.695,平均GS值为0.5996。10份供试材料被分为两大类,F1杂种优势值从3.4%~42.1%,F1性状均具有不同程度正向杂种优势。其中,单株粒数杂种优势与遗传距离的相关系数为0.461,达显著水平。其余8个农艺、品质性状与遗传距离的相关系数未达显著水平。初步认为,利用该174个SSR分子标记检测亲本间遗传差异,对本研究10份大豆亲本间杂种优势预测效果不显著。利用分子标记遗传距离预测大豆亲本杂种优势的方法有待进一步研究。
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| 关 键 词： | 大豆亲本 杂种优势 分子标记 遗传距离 相关性 杂种优势预测 |
| 收稿时间： | 2019/7/5 0:00:00 |
| 修稿时间： | 2019/8/21 0:00:00 |
Genetic Distance of Soybean Parents and Heterosis: Correlation Study |
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| Wu Qian,Li Zhi,Yu Wei,Li Jiekun,Hu Guoyu,Wang Dagang,Huang Zhiping.Genetic Distance of Soybean Parents and Heterosis: Correlation Study[J].Chinese Agricultural Science Bulletin,2020,36(1):43-48. |
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| Authors: | Wu Qian Li Zhi Yu Wei Li Jiekun Hu Guoyu Wang Dagang Huang Zhiping |
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| Institution: | 1. Crop Research Institute of Anhui Academy of Agricultural Science/Key Lab of Crop Quality Improvement of Anhui, Hefei 230031;2. Fuyang Academy of Agricultural Sciences, Fuyang Anhui 236065 |
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| Abstract: | The prediction of heterosis could improve the breeding efficiency. We selected 10 materials from different regions at home and abroad, and matched 45 hybrid combinations according to the incomplete diallel cross model (NCⅡ), and predicted the heterosis of soybean parents by the genetic distance of SSR molecular markers. The results showed that: 417 polymorphic alleles were detected in 10 parents; the variation range of polymorphic loci was 2-5, the genetic similarity coefficient (GS) varied from 0.520 to 0.695, and the average GS was 0.5996; 10 test materials could be divided into two categories, the heterosis value of F1 was from 3.4% to 42.1%, indicating that all the traits of F1 had positive heterosis in different degrees; the correlation between the heterosis value and genetic distance was 0.461, reaching a significant level; the correlation between the other 8 agronomic and quality traits and the genetic distance was positive, but the correlation coefficient was not significant. The results of heterosis prediction of 10 soybean parents by using 174 SSR molecular markers are not obvious, and the methods of soybean heterosis prediction by molecular markers need to be further explored. |
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| Keywords: | soybean parents heterosis molecular marker genetic distance correlation heterosis predication |
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