数字农科院2.0

Control Of Plant Height By 2.4 Alleles At 12 Q uantitative Trait Loci In Rice

文献类型： 外文期刊

作者： Wen, Zhihua;Yang, Changdeng;Chen, Yuan;Zheng, Anfu;Ji, Zhijuan;Zeng, Yuxiang;Liang, Yan

作者机构：

关键词： rice; plant height; QTL; allele; recombinant inbred line

期刊名称： CROP BREEDING AND APPLIED BIOTECHNOLOGY

ISSN： 1984-7033

年卷期： 2019 年 19 卷 2 期

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摘要： Plant height (PH) is controlled by quantitative trait loci (QTLs) in rice. In the present study, a recombinant inbred line population developed by crossing two rice cultivars, Lemont and Yangdao4, was grown in eight environments for QTL analysis. Multiple interval mapping detected 53 PH-QTLs, 39 of which clustered at 12 chromosome regions/putative loci. An examination of the 12 putative loci identified 24 alleles that are simultaneously involved in controlling PH. Linear regression analyses suggested that these 24 alleles function additively across the 12 loci to control PH, and plants carrying more PH-increasing alleles at the 12 loci were taller than those carrying more PH-decreasing alleles. Multiple comparison tests indicated that the effect of a single allele at the 12 loci was small and that multiple alleles must be pyramided to attain a statistically significant effect. The closest markers to the 12 loci can be used directly in marker-assisted breeding to manipulate PH.

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