建三江管理局水稻品种对稻瘟病的抗性分析

为筛选出适宜在建三江地区种植的抗稻瘟病水稻品种(系),2011年对建三江地区栽培的31个品种(系)进行叶瘟、穗颈瘟抗性监测并作出鉴定分析。稻瘟病抗病(R)品种(系)有:龙粳28、龙粳29、龙粳30、绥粳10号、龙生01-107、龙生01-028-2共6个品种(系),占总鉴定品种数量的19.35%;中抗病(MR)品种(系)有:垦稻12、垦鉴稻5号、龙盾107、龙粳27、龙育03-1789、龙交04-908共6个品种,占总鉴定品种数量的19.35%;中感(MS)品种有:垦稻19、垦稻20、垦稻21、垦稻22、垦鉴稻6号、莲稻1号、龙交06-192、龙交06-2110、龙粳20、龙粳21、龙粳25、龙粳26、三江1号、绥粳8号共14个品种,占总鉴定品种数量的45.16%;感病(S)品种有:垦稻17、龙粳31、龙粳32、绥粳3号共4个品种,占总鉴定品种数量的12.90%;高感病(HS)品种有空育131,占总鉴定品种数量的3.23%。并就如何改进稻瘟病抗性鉴定技术提出了见解,讨论了稻瘟病抗性评价在水稻安全生产上的意义。

Identification and Evaluation of Resistance of Rice to Magnaporthe grisea in Jiansanjiang Branch of Heilongjiang Land Reclamation General Bureau

The resistance of 31 rice varieties to Magnaporthe grisea was analyzed in 2011 to select suitable blast resistance varieties in Jiansanjiang area.The results showed that:high resistance(HR)varieties(strains)were Longjiang 28,Longjiang 29,Longjiang 30,Suijing No.10,Longsheng 01-107,Longsheng 01-028-2,accounting for 19.35%;Medium resistance(MR)varieties(strains)were Kendao 12,Kenjiandao No.5,Longdun 107,Longjiang 27,Longyu 03-11789 and Longjiao 04-908,accounting for 19.35%;Medium susceptible(MS)varieties(strains)were Kendao 19,Kendao 20,Kendao 21,Kendao 22,Kenjiandao No.6,Liandao No.1,Longjiao 06-192,Longjiao 06-2110,Longjing 20,Longjing 21,Longjing 25,Longjing 26,Sanjiang No.1 and Suijing No.8,accounting for 45.16%;susceptible(S)varieties(strains)were Kendao 17,Longjing 31,Longjing 32 and Suijing No.3,accounting for 12.90%;High susceptible(HS)varieties(strains)was Kongyu 131,accounting for 3.23%.Then provide idea on how to improve identification technology of resistant to rice blast and discussed the significance of identification of resistance to rice blast in rice safety production.