Genetic analysis and QTLs identification of stigma traits in japonica rice (Oryza sativa L.)

文献类型： 外文期刊

第一作者： Jiang, Jianhua

作者： Jiang, Jianhua;Xu, Lei;Hu, Changmin;Zhang, Ying;Wang, Dezheng;Dang, Xiaojing;Xiao, Meihua

作者机构：

关键词： Favorable alleles; F-1 hybrid seed production; Long stigma; Major gene plus polygene model; Rice

期刊名称：EUPHYTICA （ 影响因子：1.614； 五年影响因子：1.883 ）

ISSN： 0014-2336

年卷期： 2021 年 217 卷 5 期

页码：

收录情况： SCI

摘要： Short stigma is one of the main reasons of low yield of F-1 hybrid seed production, especially in japonica rice. Genetics analysis and identifying favorable alleles for stigma traits are necessary for improving the parents suitable for F-1 hybrid seed production. In this study, we investigated the stigma length (STL) and the sum of stigma and style length (TSSL) of 254 recombinant inbred lines from population derived from Xiushui 79 x C Bao cross in three environments, and a multi-trait multi-environment quantitative trait loci (QTL) analysis was conducted. There existed rich phenotypic variances, which provides a basis for mining favorable alleles. The correlation analysis showed that STL was significant positive correlation with TSSL. For STL, we identified 5 stable QTLs, in which 3 QTLs were found novelty, with the phenotypic variance explained (PVE) from 2.87 to 7.38%. The QTL qSTL10 has the largest PVE (7.38%). The synergistic allele of qSTL10 was from C Bao (an inbred parent that contributes the favorable alleles that increase the traits) and could increase STL 0.03 mm. For TSSL, 4 of 7 stable QTLs were novel, with the PVE from 2.17 to 8.32%. The synergistic allele of qTSSL12 was from C Bao and could increase TSSL 0.05 mm. These results provide a basis for the further fine-mapping of STL and TSSL in japonica rice and the selection male-sterile lines with long stigma in japonica rice by molecular marker-assisted selection.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序