Transgressive Potential Prediction and Optimal Cross Design of Seed Protein Content in the Northeast China Soybean Population Based on Full Exploration of the QTL-Allele System
文献类型: 外文期刊
作者: Feng, Weidan 1 ; Fu, Lianshun 3 ; Fu, Mengmeng 1 ; Sang, Ziqian 1 ; Wang, Yanping 4 ; Wang, Lei 1 ; Ren, Haixiang 4 ; Du, Weiguang 4 ; Hao, Xiaoshuai 1 ; Sun, Lei 1 ; Zhang, Jiaoping 1 ; Wang, Wubin 1 ; Xing, Guangnan 1 ; He, Jianbo 1 ; Gai, Junyi 1 ;
作者机构: 1.Nanjing Agr Univ, Soybean Res Inst, MARA Natl Ctr Soybean Improvement, MARA Key Lab Biol & Genet Improvement Soybean Gen, Nanjing, Peoples R China
2.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing, Peoples R China
3.Tieling Acad Agr Sci, Tieling, Peoples R China
4.Heilongjiang Acad Agr Sci, Mudanjiang Res & Dev Ctr Soybean, Natl Ctr Soybean Improvement, Mudanjiang Expt Stn ,Mudanjiang Branch, Mudanjiang, Peoples R China
5.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Nanjing, Peoples R China
关键词: Northeast China soybean germplasm population (NECSGP); seed protein content (SPC); restricted two stage multi-locus model GWAS (RTM-GWAS); QTL-allele matrix; optimal cross prediction; transgressive potential
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:6.627; 五年影响因子:7.255 )
ISSN: 1664-462X
年卷期: 2022 年 13 卷
页码:
收录情况: SCI
摘要: Northeast China is a major soybean production region in China. A representative sample of the Northeast China soybean germplasm population (NECSGP) composed of 361 accessions was evaluated for their seed protein content (SPC) in Tieling, Northeast China. This SPC varied greatly, with a mean SPC of 40.77%, ranging from 36.60 to 46.07%, but it was lower than that of the Chinese soybean landrace population (43.10%, ranging from 37.51 to 50.46%). The SPC increased slightly from 40.32-40.97% in the old maturity groups (MG, MGIII + II + I) to 40.93-41.58% in the new MGs (MG0 + 00 + 000). The restricted two-stage multi-locus genome-wide association study (RTM-GWAS) with 15,501 SNP linkage-disequilibrium block (SNPLDB) markers identified 73 SPC quantitative trait loci (QTLs) with 273 alleles, explaining 71.70% of the phenotypic variation, wherein 28 QTLs were new ones. The evolutionary changes of QTL-allele structures from old MGs to new MGs were analyzed, and 97.79% of the alleles in new MGs were inherited from the old MGs and 2.21% were new. The small amount of new positive allele emergence and possible recombination between alleles might explain the slight SPC increase in the new MGs. The prediction of recombination potentials in the SPC of all the possible crosses indicated that the mean of SPC overall crosses was 43.29% (+2.52%) and the maximum was 50.00% (+9.23%) in the SPC, and the maximum transgressive potential was 3.93%, suggesting that SPC breeding potentials do exist in the NECSGP. A total of 120 candidate genes were annotated and functionally classified into 13 categories, indicating that SPC is a complex trait conferred by a gene network.
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