大豆粒形相关性状的连锁分析和关联分析
关键词：大豆粒形；连锁分析；关联分析。
Linkage and Association Analysis for Seed Shape Traits in Soybean
Abstract： Soybean is a important crop for grain and oil which originated from China. Comparing with other crops, the production of soybean is quite lower made it the main item for breeders to increase.The number of pods per plant; the number of seeds per pod and the weight of one hundred seeds are included in the factors for soybean yield. The seed length; the seed width and the seed height are important to the weight of one hundred seeds,so the study of seed shape is a meaningful topic. Seed shape traits are a quantitative traits, doing chromosomal location through linkage analysis and association analysis are effective way to learn it. In this experiment, natural soybean groups have been used for soybean seed shape tratis association analysis based on genome wide totally 208715 SNP markers. The Q+K model;GAPIT software and MLM model was used to analyze soybean seed shape traits with 208715 genome wide SNP markers. When the significant threshold is set as -LogP≥4.5(P≤3.16E-05), 32 SNP markers have been detected. In recombinant inbred lines (Kefeng1 x Nannong1138-2), after set the threshold as LOD>2.5, 10 QTL have been detected which are related to seed shape traits.
Key words: Seed Shape；Linkage Analysis；Association Analysis.
目 录
摘要1
关键词1
Abstract1
Key words1
引言1
第一章 大豆粒形性状的连锁分析4
1.1材料与方法 4
1.1.1试验材料 4
1.1.2试验设计 4
1.1.3统计分析 5
1.2结果与分析 5
1.2.1表型数据分析 5
1.2.2连锁结果分析 6
1.3讨论 6
第二章 大豆粒形性状的关联分析7
2.1材料与方法 8
2.1.1试验材料 8
2.1.2试验设计 8
2.1.3统计分析 8
2.2结果与分析 8
2.2.1表型数据分析 8
2.2.2关联结果分析 9
2.3讨论 12
第三章 结论12
致谢14
参考文献14
大豆粒形相关性状的连锁分析和关联分析
大豆[Glycine max (Linn.) Merr.] 原产中国，是豆科大豆属一年生草本植物，也是我国重要的粮油兼用作物，具有很高的经济价值。国内的大豆产量不能满足需求，我国的大豆还严重依赖进口，提高大豆的产量具有重要战略意义，同时，大豆的亩产较其他作物较低，有着很大的提升空间和潜力。
大豆的产量构成因素有每亩株数，每株荚数，每荚粒数和百粒重，籽粒性状中的粒重、粒长、粒宽、粒高、粒长/粒宽、粒长/粒高、粒宽/粒高不仅直接影响籽粒的外形，还是关系到百粒重的重要性状，因此对大豆粒形的研究具有重要理论价值。大豆籽粒的相关数据是与大豆产量相关最直接最易观测的数据，其中，籽粒的数据主要分为大小、粒色、粒形和化学品质。籽粒的性状变异与适应性和产量密切关联，研究大豆籽粒的性状变化的规律和原因对大豆的育种和产量的提升有重要指导意义。
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