QTL mapping for heading date and plant height using a RIL population in rice in different photoperiod environments

Hong-Wei Zhang, Ling-Zhi Wang, Ying Xie, Hao Liu-Gen, Zhen-Zhen Wang, Chong-Fen Yi, Hui Guo, Yu Gan, Guan-Lun Xiang, Yan Zhi-Qiang, Ze Song and Zhan-Lie Yang
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Hong-Wei Zhang: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Ling-Zhi Wang: Qiandongnan Miao and Dong Autonomous Prefecture Academy of Agricultural Sciences, Kaili, P.R.China
Ying Xie: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Hao Liu-Gen: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Zhen-Zhen Wang: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Chong-Fen Yi: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Hui Guo: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Yu Gan: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Guan-Lun Xiang: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Yan Zhi-Qiang: Rice Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang, P.R. China
Ze Song: Institute of Crop Germplasm Resources, Guizhou Academy of Agricultural Sciences, Guiyang, P.R.China
Zhan-Lie Yang: Institute of Crop Germplasm Resources, Guizhou Academy of Agricultural Sciences, Guiyang, P.R.China

Czech Journal of Genetics and Plant Breeding, 2024, vol. 60, issue 3, 119-125

Abstract: Heading date determines rice seasonal and regional adaptation, while plant height is an important trait related to rice lodging resistance. In this study, a recombinant inbred line population was used to detect quantitative trait loci (QTLs) for both traits in long-day (LD) and short-day (SD) environments. Three and two QTLs for heading date were detected in LD and SD environments, respectively. Notably, qHD8 and qHD10 were commonly detected in both environments. Five and four QTLs for plant height were identified in LD and SD environments, respectively. Among them, qPH3, qPH5 and qPH6 showed no pleiotropic effects on heading date and were detected in both environments. These three QTLs are considered to be the primary targets for improving rice plant height. Additionally, two genomic regions exhibited pleiotropic effects on both heading date and plant height. The alleles delayed the heading date while simultaneously increasing plant height. This study indicated that most QTLs for heading date are sensitive to photoperiod and have pleiotropic effects on plant height, thereby complicating their application in breeding programs. These findings provide useful information for the breeding of rice varieties with desired heading dates and plant heights.

Keywords: gene-environment interaction; genetic mapping; Oryza sativa L.; pleiotropic effect; quantitative trait loci (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:60:y:2024:i:3:id:2-2024-cjgpb

DOI: 10.17221/2/2024-CJGPB

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