20个稻瘟病抗性基因在湖北省的利用价值分析  

Analyses of Twenty Blast Resistance Genes in Hubei Province

作　　者：杨小林[1] 曾凡松[1] 张舒[1] 喻大昭[1] 

机构地区：[1]湖北省农业科学院植保土肥研究所/湖北省农作物重大病虫草害可持续控制重点实验室,武汉430064

出　　处：《湖北农业科学》2014年第16期3798-3802,共5页Hubei Agricultural Sciences

基　　金：国家"十二五"农林领域科技计划项目(2012BAD19B03);湖北省农业科技创新中心项目

摘　　要：恩施、宜昌、咸宁地区一直是湖北省水稻稻瘟病的重发区和常发区。为了明确20个稻瘟病抗性基因在湖北省的抗性水平及利用价值,选择恩施地区的金子坝和两河口、宜昌地区的远安县和咸宁地区的崇阳县作为水稻稻瘟病自然诱发接种试验点,对以丽江新团黑谷为轮回亲本培育而成的持有20个垂直抗性基因的20个水稻单基因系进行稻瘟病自然诱发接种。结果表明,抗性基因Pi-kh、Pi-9、Pi-20和Piz5对叶瘟有很好的抗性表现,而抗性基因Pi-a、Pi-t、Pi-ta、Pi-zt、Pi-12(t)对叶瘟的抗性欠佳。抗性基因Pi-kp、Pi-kh、Pi-5(t)、Pi-9和Pi-z5对穗颈瘟有很好的抗性表现,而抗性基因Pi-t、Pi-ta、Pi-zt、Pi-12(t)、Pi-z对穗颈瘟的抗性欠佳。总结3年来20个垂直抗性基因在恩施、宜昌和咸宁的抗性情况,抗性基因Pi-kh、Pi-9和Pi-z5在抗稻叶瘟和抗稻穗颈瘟方面均有良好的表现,可以作为湖北省水稻抗性基因或抗源基因合理使用,而抗性基因Pi-t、Pi-ta、Pi-zt、Pi-12(t)在推广使用时应谨慎。In order to evaluate performance of rice blast resistance genes in Hubei province,20 monogenic lines（MLs） derived from LTH were inoculated by nature infection in Jinziba and Lianghekou in Enshi district, Yuan＇an in Yichang district and Chongyang district in Hubei Province, where blast occurred frequently and seriously in several years. The results showed that genes Pi-kh, Pi-9, Pi-20 and Pi-z5 were incompatible to leaf blast while genes Pi-a, Pi-t, Pi-ta, Pi-z＇, Pi-12 （t） were susceptible. Genes Pi-kp, Pi-kh, Pi-5 （t）, Pi-9 and Pi-z5 were highly resistant to panicle blast while Pi-t, Pi-ta, Pi-z＇,Pi- 12 （t）, Pi-z were not resistant to rice blast. Overall, these genes like Pi-kh, Pi-9 and Pi-z5 having good resistance to rice blast can be used as rice blast resistance genes in breeding program of Hubei rice, it should be careful when those genes like Pi-t, Pi-ta, Pi-z＇, Pi-12（t） were used as resistance genes in Hubei.

关 键 词：稻瘟病 抗性基因 利用价值 湖北省 

分 类 号：Q943.2[生物学—植物学] S435.111.4[农业科学—农业昆虫与害虫防治]