| In recent years, Fusarium crown rot (FCR) and Fusarium head blight (FHB) have occurred seriously in the Huanghuai wheat area of China, which has a great impact on the yield and quality of wheat. The types of FCR and FHB pathogens were reported to be different in different places. In order to clarify the current changes in the types of FCR and FHB pathogens in Henan, the main wheat areas in China, 257 and 88 isolates were isolated and purified from 8 cities in different ecological regions of Henan Province in 2022, including Anyang, Luohe, Zhoukou, and Nanyang. The morphological and molecular biology identification results showed that among the isolates of FCR samples, there were 231 strains of F. pseudograminearum (89.88%) and 23 strains of F. graminearum (8.95%). Among the isolates from the FHB samples, there were 76 strains of F. graminearum and 10 strains of F. pseudograminearum, accounting for 86.36% and 11.36%, respectively. In 2022, the dominant pathogen of FCR in all sampling areas of Henan Province was F. pseudograminearum, and the dominant pathogen of FHB was still F. graminearum, but the proportion of F. pseudograminearum in FHB increased, especially in the samples of FHB in Anyang, Pingdingshan, and Luohe Cities, where the isolation frequency of F. pseudograminearum reached more than 10%. |
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