Finding Stable QTL for Plant Height in Super Hybrid Rice

文献类型： 外文期刊

第一作者： Yang, Huali

作者： Yang, Huali;Yang, Qinqin;Kang, Yiwei;Zhang, Miao;Zhan, Xiaodeng;Cao, Liyong;Cheng, Shihua;Wu, Weixun;Zhang, Yingxin;Yang, Huali;Yang, Qinqin;Kang, Yiwei;Zhang, Miao;Zhan, Xiaodeng;Cao, Liyong;Cheng, Shihua;Wu, Weixun;Zhang, Yingxin;Cao, Liyong

作者机构：

关键词： Oryza sativa L; plant height; quantitative trait loci; qPH-6

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.408； 五年影响因子：3.459 ）

ISSN：

年卷期： 2022 年 12 卷 2 期

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收录情况： SCI

摘要： Plant height (PH) is one of the most important agronomic traits determining plant architecture in rice. To investigate the genetic basis of plant height in the high-yielding hybrid rice variety Nei2You No.6, recombinant inbred sister lines (RISLs) were used to map quantitative trait loci (QTL) over four years. A total of 19 minor/medium-effect QTLs were mapped on eleven chromosomes except chromosome 10, totally explaining 44.61-51.15% phenotypic variance in four environments. Among these, qPH-1a, qPH-1b, qPH-2b, qPH-3b, qPH-6, and qPH-7b were repeatedly detected over four years. Among these, the qPH-6 was mapped to an interval of 22.11-29.41 Mb on chromosome 6L, which showed the highest phenotypic variation explained (PVE) of 10.22-14.05% and additive effect of 3.45-4.63. Subsequently, evaluation of near isogenic lines (NILs) showed that the qPH-6 allele from the restorer line (R8006) could positively regulate plant height, resulting in an 18.50% increase in grain yield. These results offered a basis for further mapping of qPH-6 and molecular breeding in improving plant architecture in rice.

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