Population composition pathogens caused Fusarium head blight and Fusarium crown rot in Beijing
With the increased wheat planting area in Beijing,the incidence area of Fusarium head blight(FHB)and Fusarium crown rot(FCR)has increased.In order to clarify the pathogen population composition of FHB and FCR in Beijing,the samples were collected from six districts in Beijing in 2023,and 290 isolates from diseased ears and 163 isolates from diseased stems were obtained using tissue isolation method and were identified by TEF1-a gene sequences,and the pathogen population composition of FHB and FCR in different districts in Beijing was clarified.The main pathogens causing FHB were F.graminearum and F.pseudograminearum,among which F.graminearum was the dominant population in entire Beijing region,accounted for 92.41％and also was the dominant population in Haidian,Pinggu,Shunyi,Miyun and Yanqing,and F.pseudograminearum was the dominant pathogen in Huairou.The pathogens causing Fusarium crown rot in Beijing region consisted of F.pseudograminearum(45.40％)and F.graminearum(37.42％),and other five species in Fusarium,such as F.proliferatum(1.23％),F.sinense(7.36％),F.acuminatum(4.29％),F.tricinctum(3.07％)and F.equiseti(1.23％).F.pseudograminearum was the dominant pathogen of FCR in Haidian and Miyun,while F.graminearum was the dominant pathogen in Pinggu,Shunyi and Yanqing.The results of this study provide a basis for the prediction and precision control of FHB and FCR.
Fusarium head blightFusarium crown rotpathogen composition,Fusarium graminearumFusarium pseudograminearum
NETL
NSTL
万方数据
