文献类型： 外文期刊
作者： Liang, Wenhua 1 ; Du, Hongyang 2 ; Pang, Bingwen 2 ; Cheng, Junjie 2 ; He, Bing 2 ; Hu, Fengqin 2 ; Lv, Yuanda 2 ; Zhang, Yadong 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Food Crops, Nanjing, Peoples R China
2.Jiangsu Acad Agr Sci, Excellence & Innovat Ctr, Nanjing, Peoples R China
3.Anhui Acad Agr Sci, Rice Res Inst, Key Lab Rice Genet Breeding Anhui Prov, Hefei, Peoples R China
关键词： Rice; High-density Genetic Map; Anaerobic Germination; QTL; RNA-seq
期刊名称：FRONTIERS IN PLANT SCIENCE （ 2021影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
收录情况： SCI
摘要： The tolerance of rice anaerobic germination (AG) is the main limiting factor for direct seeding application, yet the genetics mechanism is still in its infancy. In the study, recombinant inbred lines population of TD70 Japonica cultivar and Kasalath Indica cultivar, was employed to construct a high-density genetic map by whole genome re-sequencing. As a result, a genetic map containing 12,328 bin-markers was constructed and a total of 50 QTLs were then detected for CL(coleoptile length), CD (coleoptile diameter), CSA (coleoptile surface area) and CV (coleoptile volume) related traits in the two stages of anaerobic treatment using complete interval mapping method (inclusive composite interval mapping, ICIM). Among the four traits associated with coleoptile, coleoptile volume had the largest number of QTLs (17), followed by coleoptile diameter (16), and coleoptile length had 5 QTLs. These QTLs could explain phenotypic contribution rates ranging from 0.34% to 11.17% and LOD values ranging from 2.52 to 11.57. Combined with transcriptome analysis, 31 candidate genes were identified. Furthermore, 12 stable QTLs were used to detect the aggregation effect analysis. Besides, It was found that individuals with more aggregation synergistic alleles had higher phenotypic values in different environments. Totally, high-density genetic map, QTL mapping and aggregation effect analysis of different loci related to the anaerobic germination of rice seeds were conducted to lay a foundation for the fine mapping of related genes in subsequent assisted breeding.
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