不同环境下水稻穗部性状的QTL检测及稳定性分析

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中图分类号：S511 文献标识码：A文章编号：0439-8114（2026）01-0007-05DOI：10.14088/j.cnki.issn0439-8114.2026.01.002开放科学（资源服务）标识码（OSID）：

QTL detection and stability analysis of rice panicle traits in different environments

SUNXiao-xuan，CHENChu-chu，WANGChuan-zhi，WANGXiao-lei （School of Biological and Food Engineering，Suzhou University，Suzhou 234ooo，Anhui，China

Abstract：Theaalysisofthgeneticmehansmofpaicletraitsinice（OryzasatiaL.）andteidentificationofitsexelenalleles wereimportantdirectionsforcropgeneticimprovementresearchIwasofgreatsignificancetosystematicallrevealthequantitative traitloci（QT）anditsmolecularregulatorynetworkthatcontroledthepaniclephenotypeforricehig-yieldbreding.Using28cho mosomesegmentsubstitutionlines（CSSLs）constructedbyChanghui121andKoshihikari，QTLsforpaniclelength，primarybranch numberandsecondarybranch numberwere mappedunder twoenvironments（Nanchang City，JiangxiProvincein2O21and Sanya City，Hainan Province in 2O22）.A total of 19 QTLs for panicle traits were mapped on chromosomes 1- 6，8，11 and 12，respectively. The phenotypic contribution rate of a single locus was 3.94 % -10.51%.Among them，qPL-8，qPNB-2-2and qSNB-12 could be repeatedlydetectedibothenvironments.ThephenotypicidentificationoffourCSLs（CSSL50，CSSL125，CSSL187andCSSL205）at qSNB-12 locus showed that this locus had a stable additive effect.

KeyWords：rice（OryzasatiaL.）；chromosomesegmentsubstitutionlines；panicletraits；quantitativetritlocus（QL）；stability; different environments

水稻（OryzasativaL.）穗部性状是决定产量的核心要素，包括穗长、一次枝梗数、二次枝梗数、穗粒数、千粒重和结实率等。（剩余8023字）