Development of elite restoring lines by integrating blast resistance and low amylose content using MAS
文献类型: 外文期刊
作者: Xiao Wu-ming 1 ; Peng Xin 1 ; Luo Li-xin 1 ; Liang Ke-qin 1 ; Wang Jia-feng 1 ; Huang Ming 1 ; Liu Yong-zhu 1 ; Guo Tao 1 ;
作者机构: 1.South China Agr Univ, Natl Engn Res Ctr Plant Space Breeding, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Natl Engn Res Ctr Plant Space
关键词: rice;restoring line;blast resistance;grain quality;MAS
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2018 年 17 卷 1 期
页码:
收录情况: SCI
摘要: Blast resistance and grain quality are major problems in hybrid rice production in China. In this study, two resistance (R) genes, Pi46 and Pita, along with the gene Wx(b), which mainly affects rice endosperm amylose content (AC), were introgressed into an elite indica restoring line, R8166, which has little blast resistance and poor grain quality through marker-assisted selection (MAS). Eight improved lines were found to have recurrent genome recovery ratios ranging from 88.68 to 96.23%. Two improved lines, R163 and R167, were selected for subsequent studies. R167, which has the highest recovery ratio (96.23%), showed no significant differences in multiple agronomic traits. In contrast, R163 with the lowest recovery ratio (88.68%) exhibited significant differences in heading date and yield per plant compared with the recurrent parent. At two developmental stages, R163 and R167 had greatly enhanced resistance to blast over the recurrent parent. Similar trends were also observed for agronomic traits and blast resistance in R163-and R167-derived hybrids when compared with the counterparts from R8166. In addition, R163, R167, and their derived hybrids significantly improved the grain quality traits, including amylose content (AC), gel consistency (GC), chalky grain rate (CGR), and degree of endosperm chalkiness (DEC). It confirmed the success of efficiently developing elite restoring lines using MAS in this study.
- 相关文献
作者其他论文 更多>>
-
Breeding of CMS maintainer lines through anther culture assisted by high-resolution melting-based markers
作者:Wang Ping;Chen Zhi-qiang;Wang Ping;Bai Yu-lu;Wang Min-xia;Hu Bin-hua;Pu Zhi-gang;Zhang Zhi-yong;Zhang Qiong;Xu Deng-wu;Luo Wen-long
关键词:breeding efficiency; maintainer of cytoplasmic male sterility; gene pyramiding; molecular marker-assisted selection
-
Pyramiding of Pi46 and Pita to improve blast resistance and to evaluate the resistance effect of the two R genes
作者:Xiao Wu-ming;Luo Li-xin;Wang Hui;Guo Tao;Liu Yong-zhu;Zhou Ji-yong;Chen Zhi-qiang;Zhu Xiao-yuan;Yang Qi-yun
关键词:rice blast;resistance gene;improvement;marker-assisted selection
-
Blast-Resistance Inheritance of Space-Induced Rice Lines and Their Genomic Polymorphism by Microsatellite Markers
作者:Xiao Wu-ming;Yang Qi-yun;Zhu Xiao-yuan;Xiao Wu-ming;Chen Zhi-qiang;Wang Hui;Guo Tao;Liu Yong-zhu
关键词:blast;space mutation;inheritance analysis;microsatellite DNAs polymorphism