Mapping QTL with Main Effect, Digenic Epistatic and QTL x Environment Interactions of Panicle Related Traits in Rice (Oryza sativa)

文献类型： 外文期刊

第一作者： Leng, Yujia

作者： Leng, Yujia;Huang, Lichao;Chen, Long;Ren, Deyong;Yang, Yaolong;Zhang, Guangheng;Hu, Jiang;Zhu, Li;Guo, Longbiao;Qian, Qian;Zeng, Dali;Leng, Yujia;Lin, Yongjun;Leng, Yujia;Lin, Yongjun;Xue, Dawei

作者机构：

关键词： Rice;Panicle related traits;QTL;Epistasis;QEs

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2017 年 19 卷 6 期

页码：

收录情况： SCI

摘要： Panicle related traits are critical agronomic traits which directly associated with grain yield. Although several QTL or genes have been mapped and cloned, we still need to identify new QTL or genes to understand the complex mechanisms of panicle development. In this research, a total of 116 double haploid (DH) population derived from a cross between a japonica variety Chunjiang 06 (CJ06) and an indica variety Taichung native 1 (TN1) was used to investigate primary branch number (PBN), secondary branch number (SBN), grain number per panicle (GNPP), panicle length (PL), and panicle-neck diameter (PND) under two different environmental conditions. QTL mapping analysis of five panicle related traits was performed by mapmaker/QTL1.1B and QTL Network v2.0 software. A total of 17 main effect QTLs were identified for these traits, which mapped to chromosomes 1, 4, 6, 7 and 8; their F-values ranged from 7.9 to 27.7, with a phenotypic variation from 7.81% to 24.22%. Among these QTLs, six loci were novel and two loci contain the known heading date gene, Hd1 and Ghd8/DTH8. Two pairs of epistatic interactions and six QTL-by-environment interactions (QEs) were identified, indicating that panicle related traits are susceptible to environmental influence. These results will facilitate fine mapping and QTL pyramiding for genetically improving grain yield in rice. (C) 2017 Friends Science Publishers

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