甜玉米RIL群体籽粒可溶性糖相关性状的QTL定位  

QTL mapping of soluble sugar related traits for kernels in recombinant inbred line population of sweet maize

作　　者：于典司[1] 顾炜 任哲哲 党冬冬 王慧[1] 郑洪建[1] 关媛[1] YU Diansi;GU Wei;REN Zhezhe;DANG Dongdong;WANG Hui;ZHENG Hongjian;GUAN Yuan(Crop Breeding&Cultivation Research Institute,Shanghai Academy of Agricultural Sciences,CIMMYT-China Specialty Maize Research Center,Shanghai Specialty Maize Engineering Technology Research Center,Shanghai Key Laboratory of Agricultural Genetics and Breeding,Shanghai 201403,China;College of Agriculture,Xinjiang Agricultural University,Urumqi 8300522,China)

机构地区：[1]上海市农业科学院作物育种栽培研究所,CIMMYT-中国特用玉米研究中心,上海特用玉米工程技术研究中心,上海市农业遗传育种重点实验室,上海201403 [2]新疆农业大学农学院,乌鲁木齐8300522

出　　处：《上海农业学报》2023年第5期96-100,共5页Acta Agriculturae Shanghai

基　　金：上海市科技计划(20392000400);自治区科技支疆项目(2022E02003);上海市青年科技启明星项目(23QB1403100)。

摘　　要：以甜玉米自交系SHL01和SHL03为亲本构建RIL群体,对乳熟期籽粒的葡萄糖、果糖、蔗糖性状进行QTL定位。结果表明:共检测出3个QTL位点,位于玉米的2、6、7号染色体上,其中1个葡萄糖QTL为q GLU2,2个蔗糖QTL为q SUC6、q SUC7,解释表型变异的7.24%—15.30%,主效QTLq GLU2、q SUC6能够分别解释15.30%和10.80%表型变异。本研究结果可为进一步精细定位葡萄糖、果糖、蔗糖性状基因,利用分子标记辅助育种改良甜玉米甜味品质性状奠定基础。Using sweet maize inbred lines SHL01 and SHL03 as parents to construct RIL populations,QTL mapping was performed on glucose,fructose,and sucrose traits in milk stage grains.The results showed that a total of 3 QTL loci were detected on chromosomes 2,6,and 7 of maize.Among them,1 glucose QTL was qGLU2,and 2 sucrose QTLs were qSUC6 and qSUC7,accounting for 7.24%to 15.30%of phenotypic variation.The main QTLs qGLU2 and qSUC6 were able to explain 15.30%and 10.80%of phenotypic variation,respectively.The results could lay the foundation for further fine-mapping the genes for glucose,fructose and sucrose traits and improving the sweet quality traits of sweet maize using molecular marker-assisted breeding.

关 键 词：甜玉米 可溶性糖 RIL群体 QTL 

分 类 号：S513[农业科学—作物学]