西北农业学报2025，Vol.34Issue(11)：2002-2015,14.DOI:10.7606/j.issn.1004-1389.2025.11.004
'宜宾猪儿麦'产量相关性状QTL定位及候选基因的挖掘
QTL of Analysis and Candidate Gene Identification of Yield-related Traits in'Yibinzhuer Wheat'
摘要
Abstract
To analyze the genetic patterns influencing yield-related traits in wheat landraces and identi-fy associated QTL,a recombinant inbred line(RIL)population was constructed using the Sichuan lo-cal wheat variety'Yibinzhuer wheat'and'Taichang 29'.A genetic linkage map was developed using genotype data from a 55K SNP chip and 117 lines.Quantitative trait locus(QTL)analysis was per-formed for six yield-related traits,including effective tiller number,spike length,spikelet number,grains per spikelet,spike grain weight,and thousand-grain weight,across three different environ-mental conditions.The results showed that 31 yield-related QTLs were identified using QTL IciMap-ping 4.1 through Bayesian interval mapping(BIP),and 37 yield-related QTLs were identified through multiple environment trials(MET)models,respectively.Additionally,17 candidate genes were pre-dicted.The localization results for'Yibinzhuer wheat'were consistent between the BIP and MET models,with QTL localization in the MET model being significantly influenced by the environment.Of the 17 candidate genes screened,eight may be related to wheat disease resistance,whereas nine may be associated with yield-related traits.QSLYBR.Sicau-2A.1 was consistently detected in one en-vironment and under under Best Linear Unbiased Prediction(BLUP),explaining the highest pheno-typic variance.This QTL is identified as a superior locus in the landrace'Yibinzhuer wheat',provi-ding theoretical support for further fine mapping and marker-assisted selection.关键词
小麦/产量相关性状/QTLKey words
Wheat/Yield-related traits/QTL引用本文复制引用
何万龙,焦文娟,张飞飞,任毅,魏育明,陈国跃,耿洪伟,程宇坤..'宜宾猪儿麦'产量相关性状QTL定位及候选基因的挖掘[J].西北农业学报,2025,34(11):2002-2015,14.基金项目
自治区高校基本科研业务费科研项目(XIEDU20241042) （XIEDU20241042）
自治区重点研发计划项目(2022B02015-3) （2022B02015-3）
新疆农业大学作物学重点学科发展基金(XNCDKY2021001). Fundamental Research Funds for Universities in Xinjiang Uygur Autonomous Re-gion(No.XIEDU20241042) （XNCDKY2021001）
Key R&D Program of Xinjiang Uygur Autonomous Region(No.2022B02015-3) （No.2022B02015-3）
Key Discipline Development Fund of Crop Science of Xinjiang Agricultural University(No.XNCDKY2021001). （No.XNCDKY2021001）
