摘要
借助IBM22008 neighbors高密度遗传图谱整合802个玉米茎秆倒伏相关QTL,采用元分析方法获得64个MQTL(meta quantitative trait loci,MQTL),覆盖玉米全基因组。与水稻抗倒伏基因同源比对获得5个玉米茎秆倒伏相关候选基因,分别定位在玉米第1、3、4和9染色体上。通过基因表达分析表明,5个候选基因可能参与茎秆发育生物学过程,进而调控对茎秆机械强度。玉米茎秆倒伏相关性状MQTL及候选基因分析可以为分子标记辅助育种及相关基因克隆提供信息。
Mining stalk lodging related genes is significant for maize variety improvement and molecular mark⁃er-assisted breeding(MAS).In this study,64 meta-quantitative trait loci(MQTLs)were obtained by integrating 802 maize stalk lodging related QTLs using the IBM22008 neighbors high-density genetic map,covering the entire maize genome.By comparing with rice cloned lodging orthologous genes,five candidate genes related to lodging re⁃sistance of maize stalk were obtained,located on maize chromosome 1,3,4,and 9,respectively.Gene expression analysis indicates that these 5 genes may be involved in the biological process of stalk development,thereby regulat⁃ing the mechanical strength of the stalk.Analysis of MQTLs and related candidate genes for lodging related traits of maize stalk can provide useful information for molecular marker-assisted breeding and the cloning of related genes.
作者
房海悦
栾天宇
王雪
曲文利
张春宵
周小辉
董菁
李淑芳
刘学岩
李晓辉
金峰学
FANG Hai-yue;LUAN Tan-yu;WANG Xue;QU Wen-li;ZHANG Chun-xiao;ZHOU Xiao-hui;DONG Jing;LI Shu-fang;LIU Xue-yan;LI Xiao-hui;JIN Feng-xue(Maize Research Institute,Jilin Academy of Agricultural Sciences(Northeast Agricultural Research Center of China),Changchun 130000;Qiqihar Sub-academy of Heilongjiang Academy of Agricultural Sciences,Qiqihar 161006;Foreign Experts Service Center of Jilin Province,Changchun 130012,China)
出处
《玉米科学》
北大核心
2025年第8期35-44,共10页
Journal of Maize Sciences
基金
吉林省农业科技创新工程项目“主要农作物种质资源鉴评及创制”(GXGC2024ZD003)
科技创新2030-重大项目“养分高效高产玉米品种设计与培育”(2023ZD04067)。
