Characterization of a novel high-tillering dwarf 3 mutant in rice

作     者：Bosen Zhang Feng Tian Lubin Tan Daoxin Xie Chuanqing Sun 

作者机构：School of Life Sciences Tsinghua University Beijing 100084 China State Key Laboratory of Plant Physiology and Biochemistry National Center for Evaluation of Agricultural Wild Plants (Rice) Laboratory of Crop Heterosis and Utilization of Ministry of Education Beijing Key Laboratory of Crop Genetic Improvement Department of Plant Genetics and Breeding China Agricultural University Beijing 100193 China 

出 版 物：《Journal of Genetics and Genomics》 (遗传学报（英文版）)

年 卷 期：2011年第38卷第9期

页      面：411-418页

核心收录：

学科分类：0710[理学-生物学] 090706[农学-园林植物与观赏园艺] 0907[农学-林学] 1001[医学-基础医学(可授医学、理学学位)] 09[农学] 0901[农学-作物学] 

基　　金：supported by the Project of Conservation and Utilization of Agro-Wild Plants of the Ministry of Agriculture of China and Special Fund for Agro-scientific Research in the Public Interest(No.201003021) 

主　　题：Rice High-tillering Dwarf Mapping 

摘      要：Tiller number and culm length are important components of plant architecture and determinate grain production in rice.A line SIL046, derived from an introgression lines population developed by an accession of common wild rice（Oryza rufipogon Griff.） and a high-yielding indica cultivar Guichao 2（Oryza sativa L.）,exhibits a higher tiller number and shorter culm length phenotype than the recipient parent Guichao 2（GC2）.Genetic analysis showed that the high-tillering dwarf phenotype was controlled by a novel single recessive gene,referred to as the high-tillering dwarf 3（htd3）,which located within the genetic distance of 13.4 cM between SSR makers RM7003 and RM277 on chromosome 12.By means of fine-mapping strategy,we mapped HTD3 gene within the genetic distance of 2.5 cM and the physical distance of 3100 kb in the centromere of chromosome 12.Further identification of HTD3 gene would provide a new opportunity to uncover the molecular mechanism of the development of culm and tiller,two important components of yields in rice.