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| 水稻光温敏核不育系龙S的稻瘟病抗性及其遗传分析 | |
| 引用本文： | 孟秋成,魏涛淘,危飞跃,刘建丰,吴俊,刘雄伦.水稻光温敏核不育系龙S的稻瘟病抗性及其遗传分析[J].杂交水稻,2012,27(2):77-80. |
| 作者姓名： | 孟秋成 魏涛淘 危飞跃 刘建丰 吴俊 刘雄伦 |
| 作者单位： | 1. 湖南农业大学农学院 湖南长沙410128;中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,湖南长沙410125 2. 湖南农业大学农学院 湖南长沙410128 3. 邵阳市农业局,湖南邵阳,422000 |
| 基金项目： | 国家“863”计划项目(2010AA101304) |
| 摘 要： | 2007和2008年对水稻光温敏核不育系龙S及其后代进行稻瘟病菌苗期接种鉴定,结果表明:龙S对稻瘟病菌的抗谱较广,对供试26个菌株均表现为高抗,其稻瘟病抗性强于广谱抗瘟基因Pi9的携带亲本75 -1 - 127；龙S的稻瘟病抗性由主效显性基因控制,无论配组所使用的父本品系对接种菌株表现抗、感或高感,龙S的杂种F1代均表现高抗；龙S对菌株RB13的抗性表现为由1对核基因控制的显性遗传. |
| 关 键 词： | 水稻光温敏核不育系 龙S 稻瘟病抗性 遗传 |
Blast Resistance and Its Genetic Analysis of Rice PTGMS Line Long S |
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| MENG Qiu-cheng , WEI Tao-tao , WEI Fei-yue , LIU Jian-feng , WU Jun , LIU Xiong-lun.Blast Resistance and Its Genetic Analysis of Rice PTGMS Line Long S[J].Hybrid Rice,2012,27(2):77-80. | |
| Authors: | MENG Qiu-cheng WEI Tao-tao WEI Fei-yue LIU Jian-feng WU Jun LIU Xiong-lun |
| Institution: | 1 (1.College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;2.Key Laboratory of Agroecological Processes in Subtropical Region,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha,Hunan 410125,China;3.Shaoyang Agricultural Bureau,Shaoyang,Hunan 422000,China) |
| Abstract: | The inoculation of Magnaporthe oryza strains was conducted onto the seedlings of Long S,a new photoperiod-and thermo-sensitive genic male sterile（PTGMS） line with a wide spectrum of blast resistance in rice,and its filial generations in 2007 and 2008 to identify the blast resistance and its genetic behavior of Long S.The results showed that Long S was highly resistant to all 26 tested strains,indicating its wide spectrum of blast resistance,and its resistance was better than that of the resistant control line carrying Pi9,a broad-spectrum blast resistance gene.The genetic analysis showed that the blast resistance of Long S was controlled by major dominant genes.No matter whether the male parents were resistant or susceptible to the tested blast strains,the F1 hybrids of Long S were all highly resistant to the blast strains.Based on the segregation ratio of blast resistance to Strain RB13 in the F2 generations of Long S/CO39 and Long S/R599,it was found that the resistance of Long S to Strain RB13 was controlled by a pair of dominant nuclear genes. |
| Keywords: | rice PTGMS line Long S blast resistance inheritance |
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