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Identification of QTLs for Seed Dormancy in Cultivated Peanut Using a Recombinant Inbred Line Mapping Population

文献类型： 外文期刊

作者： Wang, Ming Li 1 ; Wang, Hui 2 ; Zhao, Chuanzhi 3 ; Tonnis, Brandon 1 ; Tallury, Shyam 1 ; Wang, Xingjun 4 ; Clevenger, 1 ;

作者机构： 1.USDA ARS, Plant Genet Resources Conservat Unit, 1109 Expt St, Griffin, GA 30223 USA

2.USDA ARS, Crop Genet & Breeding Res Unit, Tifton, GA 31793 USA

3.Univ Georgia, Dept Plant Pathol, Tifton, GA 31793 USA

4.Shandong Acad Agr Sci, Biotechnol Res Ctr, Jinan 250100, Peoples R China

5.Hudson Alpha Inst Biotechnol, Ctr Plant Genom & Sustainable Agr, Huntsville, AL 35802 USA

关键词： A; hypogaea; Seed dormancy; Aflatoxin contamination; Quantitative trait loci; Marker-assisted selection

期刊名称：PLANT MOLECULAR BIOLOGY REPORTER （ 影响因子：1.595； 五年影响因子：2.042 ）

ISSN： 0735-9640

年卷期：

页码：

收录情况： SCI

摘要： Seed dormancy is an important breeding trait for the development of certain types of peanut cultivars. Peanut cultivars with seed dormancy can inhibit preharvest sprouting in which the sprouting may increase susceptibility to preharvest aflatoxin contamination. The recombinant inbred line (RIL) mapping population derived from a cross of Tifrunner, a dormant Runner type, and GT-C20, a non-dormant Spanish type, were planted in the field for 2 years, and the freshly harvested seeds were used for seed dormancy tests at 7, 14, 21, and 28 days during germination. There were three RILs from 2-year tests with no dormancy (T48, T83, T160) and two lines with strong dormancy (T11, T163). This RIL population was genotyped using peanut SNP array 'Axiom_Arachis' 58 K, and two major seed dormancy QTLs were anchored on chromosome A04 and A05 with 43.16% and 51.61% of the phenotype variation explained (PVE), respectively. The QTL mapped on chromosome A05 had been anchored on a physical map interval of 98 kb (157.538-157.636 Mb) from which a possible candidate gene (Arahy.KB746A, ethylene-responsive transcription factor) was identified. Reference to the peanut physical map and flanking sequences, DNA markers can be developed for these two QTLs and used in marker-assisted breeding selection for seed dormancy in peanut.

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[1]Identification of QTLs for Seed Dormancy in Cultivated Peanut Using a Recombinant Inbred Line Mapping Population. Wang, Ming Li,Tonnis, Brandon,Tallury, Shyam,Wang, Hui,Guo, Baozhu,Wang, Hui,Zhao, Chuanzhi,Zhao, Chuanzhi,Wang, Xingjun,Clevenger, Josh. 2022

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