Genetic Analysis and Mapping of the Dominant Dwarfing Gene D-53 in Rice  

作　　者：LI-Rong Wei Ji-Chen Xu Xiao-Bo Li Qian Qian LI-Huang Zhu 

机构地区：[1]Institute of Genetics and Developmental Biology, the Chinese Academy of Sciences, Beijing 100101, China [2]State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China

出　　处：《Journal of Integrative Plant Biology》2006年第4期447-452,共6页植物学报（英文版）

基　　金：National Natural Science Foundation of China （90208001）and the Knowledge Innovation Program of the Chinese Academy of Sciences （KSCX2-SW-306）.

摘　　要：The dwarfing gene D-53 Is one of a few dominant genes for dwarfing In rice （Oryza satlva L.）. In the present study, our genetic analysis confirmed that mutant characteristics including dwarfing, profuse tlllerlng, thin stems and small panicles are all controlled by the dominant D-53 gene. We measured the length of each Internode of KL908, a D-53-carrylng line, and classified the dwarfism of KL908 Into the dn-type. In addition, we measured elongation of the second sheath and a-amylase activity In the endosperm, and we characterized KL908 as a dwarf mutant that was neither glbberelllc acid-deficient nor glbberelllc acid-Insensitive. Using a large F2 population obtained by crossing KL908 with a wild-type variety, NJ6, the D-53 gene was mapped to the terminal region of the short arm of chromosome 11, with one simple sequence repeat marker, Ds3, co-segregating, and the other, K81114, located 0.6 cM away.The dwarfing gene D-53 Is one of a few dominant genes for dwarfing In rice （Oryza satlva L.）. In the present study, our genetic analysis confirmed that mutant characteristics including dwarfing, profuse tlllerlng, thin stems and small panicles are all controlled by the dominant D-53 gene. We measured the length of each Internode of KL908, a D-53-carrylng line, and classified the dwarfism of KL908 Into the dn-type. In addition, we measured elongation of the second sheath and a-amylase activity In the endosperm, and we characterized KL908 as a dwarf mutant that was neither glbberelllc acid-deficient nor glbberelllc acid-Insensitive. Using a large F2 population obtained by crossing KL908 with a wild-type variety, NJ6, the D-53 gene was mapped to the terminal region of the short arm of chromosome 11, with one simple sequence repeat marker, Ds3, co-segregating, and the other, K81114, located 0.6 cM away.

关 键 词：dominant dwarf gene genetic analysis genetic mapping rice. 

分 类 号：S435.1[农业科学—农业昆虫与害虫防治]