摘要
以太湖流域粳稻地方品种薄稻、铁杆青、江南晚和缺儿糯等广谱、高抗稻瘟病为材料,与高感稻瘟病品种苏御糯杂交,获得杂交F1、F2,分别接种日本稻瘟病鉴别菌系北1和中国稻瘟病菌生理小种ZE3、ZG1,根据P1、P2、F1和F2等不同世代植株的抗、感反应,分析地方品种对不同稻瘟病菌生理小种(菌系)的抗性遗传机理。结果表明:薄稻、铁杆青及缺儿糯对北1菌系的抗性均可能由一对显性基因控制,江南晚对北1的抗性则可能由两对抑制基因互作控制;铁杆青及缺儿糯对ZE3小种的抗性均可能由一对显性基因控制,薄稻和江南晚对ZE3小种的抗性可能分别由两对显性基因和两对抑制基因互作控制;铁杆青对ZG1小种的抗性可能是由一对显性主基因控制,薄稻和江南晚对ZG1小种的抗性则可能由两对抑制基因互作控制。进一步将薄稻与12个日本稻瘟病菌鉴别品种杂交,用北1菌系接种不同组合的F1和F2,进行抗病基因的等位性测定。结果表明,薄稻对北1菌系的抗性基因与12个鉴别品种所携带的已知抗稻瘟病基因是不等位,将该基因暂定为Pi-bd1(t)。
The crosses were made between fourjaponlca rice （Oryza sativa L.） landraces Bodao, Tieganqing, Jiangnanwan and Queernuo from Taihu Lake region, which were highly resistant to the blast （Magnaporthe grisa）, and a susceptible japonica variety Suyunuo to produce F1 and F2 generations. The P1, P2, F1 and F2 generation from various combinations were inoculated separately with Japanese blast strain Hoku 1 and Chinese races ZE3 and ZG1 to study genetic patterns of resistance in the four landraces to the blast. Resistance in Bodao, Tieganqing or Queernuo to blast Hoku 1 might be controlled by a dominant gene, and in Jiangnanwan by two inhibiting effect genes. Resistance in Tieganqing or Queernuo to blast ZE3 might be controlled by one dominant gene, and in Bodao and Jiangnanwan by two independently dominant genes and two inhibiting effect genes, respectively. Resistance in Tieganqing to blast ZG1 might be controlled by a dominant gene, but in Bodao and Jiangnanwan by two inhibiting effect genes. The crosses were further made between landrace Bodao and 12 Japanese differential varieties possessing the known resistance genes to the blast to produce F1 and F2 generations. The plants of various generations were inoculated with strain Hoku 1 to confirm the resistance gene in Bodao was allelic with known resistance genes. The results show that the resistance gene in Bodao to strain Hoku 1 was non allelic with known resistance genes, and tentatively designated Pi-bdl（t）.
出处
《遗传》
CAS
CSCD
北大核心
2007年第10期1249-1255,共7页
Hereditas（Beijing)
基金
国家高技术研究发展计划(863计划)项目(编号:2006AA10Z162)~~
关键词
粳稻
地方品种
稻瘟病
抗性遗传
等位性测定
Oryza sativa subs. japonica
landraces
Magnaporthe grisa
resistance genetics
allelism test
