生物技术通报2026，Vol.42Issue(8)：97-105,9.DOI:10.13560/j.cnki.biotech.bull.1985.2025-1211
基于全基因组关联分析挖掘水稻抗旱相关基因
Mining of Drought-resistance Related Genes in Rice Based on Genome-wide Association Study
摘要
Abstract
[Objective]Analysis of quantitative trait loci(QTLs)associated with rice leaf wilt degree,providing a reference for screening drought-tolerance candidate genes in rice.[Method]Using a panel of 300 rice germplasm resources,the leaf rolling index(LRI)and leaf wilt degree(LWD)were investigated under drought stress.Genome-wide association study(GWAS)was employed to map drought tolerance-related quantitative trait loci(QTLs).[Result]Phenotypic data for LRI and LWD followed a normal distribution.Four QTLs associated with LWD were identified via GWAS.Among these,qLWD4-1 was consistently detected across both investigation periods.Based on haplotype analysis and gene function annotation,four candidate genes for drought tolerance(LOC_Os04g54360,LOC_Os04g54474,LOC_Os04g54560,and LOC_Os04g54570)were screened within the qLWD4-1 locus region.[Conclusion]This study identified a stably expressed QTL(qLWD4-1)associated with leaf wilt degree across two investigation periods via GWAS,and four drought-resistant candidate genes were determined within this locus.关键词
水稻/抗旱性/全基因组关联分析/主成分分析/数量性状位点Key words
rice/drought resistance/genome-wide association study/principal component analysis/quantitative trait loci引用本文复制引用
宋子慧,薛丽,王森,孙建昌,韩冰,崔迪,韩龙植,赵正武,马小定..基于全基因组关联分析挖掘水稻抗旱相关基因[J].生物技术通报,2026,42(8):97-105,9.基金项目
三亚中国农业科学院国家南繁研究院南繁专项(YBXM2570) （YBXM2570）
