水稻穗部簇生突变体(Cl-dz)的遗传分析与初步定位  

Genetic Analysis and Gene Mapping of the Clustered Spikelets Mutant(Cl-dz)of Rice

作　　者：周鹏[1,2] 邓其明[1] 涂诗航[2] 郑家团[2] 李平[1] 

机构地区：[1]四川农业大学水稻研究所,四川成都611130 [2]福建省农业科学院水稻研究所,福建福州350019

出　　处：《福建农业学报》2012年第5期481-484,共4页Fujian Journal of Agricultural Sciences

基　　金：国家转基因生物新品种培育重大专项专题(2008ZX08009-001);福建省现代农业(水稻)产业技术体系(闽财指[2009]528)

摘　　要：从水稻育种材料后代中获得1个受隐性单基因控制的簇生穗突变体(Cl-dz)。其表型特征为:在二次枝梗顶端有2～3个小穗簇生在一起,呈"W"形态。遗传分析表明该性状是受单基因控制的隐性性状。利用突变体Cl-dz与保持系冈46杂交构建F2定位群体,将该基因定位在6号染色体的SSR标记RM6036与RM1340之间,遗传距离分别为3.6cM和7.0cM。A clustered spikelets mutant （Cl-dz） controlled by single recessive gene was found in the progeny of a rice breeding material, its phenotype characteristic was that 2 or 3 spikelets cluster on the second stem in the shape of ＂W＂. Genetic analysis indicated that the trait was a recessive trait genetically controlled by single gene. The F2 mapping population was constructed by hybridization between mutant Cl-dz and G46. And the gene Cl-dz was mapped between SSR markers, RM6036 and RM1340 in chromosome 6 of rice. The genetic distance was 3.6 cM and 7.0 eM, respectively.

关 键 词：簇生穗 遗传分析 基因定位 SSR标记 

分 类 号：S435[农业科学—农业昆虫与害虫防治] S511[农业科学—植物保护]