摘要
为明确甘肃省近年来小麦条锈菌Puccinia striiformis f.sp.tritici发生、分布和生理小种的变化,于2008—2023年对甘肃省中南部的临夏回族自治州、定西市、天水市和陇南市4个市(州)小麦条锈菌的越夏发病、秋苗发病、越冬和春季流行情况及生理小种变化进行调查。结果显示:2008—2023年甘肃省小麦条锈菌越夏菌源主要集中在中部海拔1900 m以上区域,最低越夏海拔为1550 m,秋季菌源多数在临夏回族自治州和定西市,春季流行期条锈菌主要集中在陇南市和天水市,最高越冬海拔为2300 m。2008—2023年小麦条锈菌生理小种由水源11致病类群和Hy致病类群为主的毒性类群转变为以贵农22致病类群和Hy致病类群为主的毒性群体,曾经的优势小种CYR33被CYR34取代,当前优势小种由CYR34和CYR32组成。建议全国育种单位应重视培育兼抗条锈菌CYR34和CYR32的小麦品种。
To clarify the occurrence,distribution and physiological race changes of Puccinia striiformis f.sp.tritici(Pst)in Gansu Province in recent years,investigations on the annual disease cycle were conducted and physiological races of Pst monitored from 2008 to 2023.The results revealed that the summer survival inoculum of Pst was primarily concentrated in areas above 1900 meters in Linxia and Dingxi in central Gansu,with the lowest survival altitude extending down to 1550 meters.In autumn,the majority of inoculum sources were found in Linxia and Dingxi,while during the spring epidemic period,the disease predominantly occurred in Longnan and Tianshui,with the highest overwintering altitude reaching 2300 meters.The physiological races of Pst in Gansu have shifted from the virulence groups dominated by Su11 and Hy46 to the pathogenic groups primarily composed of G22 and Hy.The formerly dominant physiological race,CYR33,has been replaced by CYR34,with the current dominant races comprised of CYR34 and CYR32.National wheat rust resistance breeding efforts should prioritize resistance against CYR34 and CYR32.
作者
张勃
孙振宇
黄瑾
曹世勤
金社林
郭致杰
李培玲
李青青
王建锋
王晓杰
Zhang Bo;Sun Zhenyu;Huang Jin;Cao Shiqin;Jin Shelinl;Guo Zhijie;Li Peiling;Li Qingqing;Wang Jianfeng;Wang Xiaojie(Institute of Plant Protection,Gansu Academy of Agricultural Sciences,Lanzhou 730070,Gansu Province,China;Yuzhong Alpine Agricultural Experiment Station,Gansu Academy of Agricultural Sciences,Lanzhou 730010,Gansu Province,China;College of Plant Protection,Northwest A&F University,Yangling 712100,Shaanxi Provine,China)
出处
《植物保护学报》
北大核心
2025年第6期1363-1378,共16页
Journal of Plant Protection
基金
国家重点研发计划项目(2021YFD1401000)
国家自然科学基金项目(32060596)。
关键词
小麦条锈菌
生理小种
致病类群
越夏菌源
海拔
Puccinia striiformis f.sp.tritici
race
pathogenic group
summer survival inoculum
altitude
