Mapping quantitative trait loci for heat tolerance at anthesis in rice using chromosomal segment substitution lines

文献类型： 外文期刊

第一作者： Zhao, Lei

作者： Zhao, Lei;Lei, Jianguo;Zhu, Shan;Chen, Hongping;Huang, Renliang;Peng, Zhiqin;Tu, Qinghua;Shen, Xianhua;Yan, Song;Zhao, Lei;Lei, Jianguo;Huang, Yingjin;Zhu, Shan;Peng, Zhiqin;Zhao, Lei;Huang, Yingjin;Lei, Jianguo;Huang, Yingjin;Zhu, Shan;Peng, Zhiqin;Tu, Qinghua

作者机构：

关键词： rice (Oryza sativa L.);heat tolerance;anthesis stage;CSSLs;QTL;qPSL(ht)4.1

期刊名称：BREEDING SCIENCE （ 影响因子：2.086； 五年影响因子：2.632 ）

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收录情况： SCI

摘要： To study the genetic basis of heat tolerance at anthesis, a set of chromosome segment substitution lines (CSSLs) derived from Sasanishiki (japonica ssp. heat susceptible) and Habataki (indica spp. heat tolerant) were used for analysis across three high temperature environments. Spikelet fertility (SF), daily flowering time (DFT) and pollen shedding level (PSL) under high temperature (HT) were assessed. Eleven related QTLs were detected, of which, two QTLs qSF(ht)2 and qSF(ht)4.2 for spikelet fertility were identified on chromosomes 2 and 4. Four QTLs qDFT3, qDFT8, qDFT10.1 and qDFT11 for daily flowering time were detected on chromosomes 3, 8, 10 and 11. The other five QTLs qPSL(ht)1, qPSL(ht)4.1, qPSL(ht)5, qPSL(ht)7 and qPSL(ht)10.2 on chromosomes 1, 4, 5, 7 and 10, respectively, were found had effects both on spikelet fertility and pollen shedding level. Of the 11 QTLs, 8 were overlapped with QTLs reported by others, 3 QTLs qPSL(ht)4.1, qPSL(ht)7 and qPSL(ht)10.2 identified in this study were novel. The stability of qPSL(ht)4.1 was further verified at different temperatures, which could be used to improve the pollen shedding and pollen growth on stigma for rice heat-tolerance breeding.

分类号： S33

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