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Detection of quantitative trait loci for wheat (Triticum aestivum L.) heading and flowering date

文献类型： 外文期刊

作者： Zhao, C. H. 1 ; Sun, H. 1 ; Liu, C. 2 ; Yang, G. M. 3 ; Liu, X. J. 1 ; Wang, Y. P. 1 ; Lv, F. X. 1 ; Wu, C. Y. 1 ; Xu, J. W. 1 ;

作者机构： 1.Ludong Univ, Coll Agr, Yantai 264025, Shandong, Peoples R China

2.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Shandong, Peoples R China

3.Soil & Fertilizer Workstn Heze City, Heze 274000, Shandong, Peoples R China

关键词： Heading date; epistatic effects; flowering date; major and stable QTL; quantitative trait loci; QTL clusters

期刊名称：JOURNAL OF AGRICULTURAL SCIENCE （ 影响因子：1.476； 五年影响因子：1.891 ）

ISSN： 0021-8596

年卷期： 2019 年 157 卷 1 期

页码：

收录情况： SCI

摘要： Heading date (HD) and flowering date (FD) are critical for yield potential and stability, so understanding their genetic foundation is of great significance in wheat breeding. Three related recombinant inbred line populations with a common female parent were developed to identify quantitative trait loci (QTL) for HD and FD in four environments. In total, 25 putative additive QTL and 20 pairwise epistatic effect QTL were detected in four environments. The additive QTL were distributed across 17 wheat chromosomes. Of these, QHd-1A, QHd-1D, QHd-2B, QHd-3B, QHd-4A, QHd-4B and QHd-6D were major and stable QTL for HD. QFd-1A, QFd-2B, QFd-4A and QFd-4B were major and stable QTL for FD. In addition, an epistatic interaction test showed that epistasis played important roles in controlling wheat HD and FD. Genetic relationships between HD/FD and five yield-related traits (YRTs) were characterized and ten QTL clusters (C1-C10) simultaneously controlling YRTs and HD/FD were identified. The present work laid a genetic foundation for improving yield potential in wheat molecular breeding programmes.

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