夏大豆重组自交系群体籽粒蛋白质含量QTL定位  被引量:2

QTL Mapping of Grain Protein Content in Recombinant Inbred Lines of Summer Soybean

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作  者:滕康开 曹永策[1,3] 李曙光 孔杰杰[1] 邢静[1] 赵团结 Teng Kangkai;Cao Yongce;Li Shuguang;Kong Jiejie;Xing Jing;Zhao Tuanjie(Soybean Research Institute,National Center for Soybean Improvement,Key Laboratory for Biology and Genetic Improvement of Soybean(General),Ministry of Agriculture,National Key Laboratory of Crop Genetics and Germplasm Enhancement,Nanjing Agricultural University,Nanjing,210095;Suzhou Vocational Technical College,Suzhou,234000;College of Life Science,Yan'an University,Yan'an,716000)

机构地区:[1]南京农业大学大豆研究所国家大豆改良中心农业部大豆生物学与遗传育种重点实验室(综合)作物遗传与种质创新国家重点实验室,南京210095 [2]宿州职业技术学院,宿州234000 [3]延安大学生命科学学院,延安716000

出  处:《分子植物育种》2018年第18期5987-5993,共7页Molecular Plant Breeding

基  金:国家重点研发计划课题(2016YFD0100304);国家自然科学基金项目(31571691);长江学者与创新团队发展计划项目(IRT_17R55)共同资助

摘  要:大豆籽粒蛋白质含量是复杂数量性状,目前对中国夏播大豆籽粒蛋白质含量等品质性状遗传基础的了解相对较少。本研究对以江淮地区夏大豆蒙8108与骨干亲本南农1138-2杂交育成的NJMN重组自交系群体进行了5个环境田间试验获得表型数据,利用含2 062个SLAF标记的遗传图谱对大豆籽粒蛋白质含量进行加性、上位性QTL定位。结果发现NJMN群体籽粒蛋白质含量存在超亲分离,不同种植环境、家系与环境间互作均存在显著差异。在6号、7号、11号、17号染色体上定位到4个控制籽粒蛋白质含量的加性QTL,其中qProt-17-1未见前人报道,其与环境间存在显著互作效应。还发现3对加性×加性上位QTL,其总的效应值和表型贡献率均高于加性QTL,表明非加性效应在NJMN群体蛋白质含量遗传体系中起了重要作用。Soybean grain protein content is a complex quantitative trait, and and the genetic basis of quality traits such as the grain protein content of Chinese summer soybean are relatively less understood. Five environmental field experiments were conducted to obtain phenotypic data of NJMN recombinant inbred line population, which was bred by crossing summer soybean Meng8108 with Nannong1138-2, a key parent in Jianghuai area. Additive and epistatic QTL location for seed protein content was applied by using the genetic map with 2 062 specific-locus amplified fragment markers. The results indicated that there was an obvious transgressive segregation of seed protein content in NJMN population grains, and significant differences were existed in different planting environments, families and the interactions among environments. Four additive QTLs for controlling grain protein content were mapped on chromosome 6, 7, 11 and 17. Among them, qProt-17-1 had not been reported previously and had significant interaction with environment. Three pairs of additive × additive epistatic QTL were found, and the total effect valueand phenotypic contribution rate were higher than those of the four additive QTL. It indicated that the non-additive effect might play an important role in the genetic base for seed protein content in NJMN population.

关 键 词:大豆 籽粒蛋白质含量 加性QTL 上位性QTL 基因型与环境互作 

分 类 号:S565.1[农业科学—作物学]

 

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