Genetic analysis and gene mapping of a new rolled-leaf mutant in rice (Oryza sativa L.)
文献类型: 外文期刊
作者: Shi YongFeng 1 ; Chen Jie 1 ; Liu WenQiang 1 ; Huang QiNa 1 ; Shen Bo 2 ; Leung Hei 1 ; Wu JianLi 1 ;
作者机构: 1.China Natl Rice Res Inst, Natl Key Lab Rice Biol, Chinese Natl Ctr Rice Improvement, Hangzhou 310006, Zhejiang, Peoples R China
2.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310016, Zhejiang, Peoples R China
关键词: rice (Oryza sativa L.);chemical mutagenesis;molecular marker;rolled-leaf gene;physical map
期刊名称:SCIENCE IN CHINA SERIES C-LIFE SCIENCES ( 影响因子:1.61; 五年影响因子:1.148 )
ISSN: 1006-9305
年卷期: 2009 年 52 卷 9 期
页码:
收录情况: SCI
摘要: To understand the development of rice leaf blades, we identified a new rolled-leaf mutant, w32, from indica cultivar IR64 through EMS mutagenesis. The mutant showed a stable rolled-leaf phenotype throughout the life cycle. Two F-2 populations were developed by crossing w32 to cultivar IR24 and PA64. Genetic analysis showed that the rolled-leaf phenotype was controlled by a single recessive gene. To determine the location of the gene, bulked segregant analysis was carried out using mutant and wild-type DNA pools and 1846 mutant-type F-2 individuals derived from the cross w32/PA64 were genotyped to locate the gene on the short arm of chromosome 7. The rolled-leaf gene, tentatively named rl11(t), is likely a new gene as no other rolled-leaf genes have been identified near the region. By developing new SSR and InDel markers, the gene was delimited to a 52 kb region near the end of the short chromosome arm. Further fine mapping and cloning of the gene are currently underway.
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