Study on Survival Time of Erwinia amylovora in Soil of Fragrant Pear Orchard
In order to explore the existence of Erwinia amylovora in the soil of the diseased pear orchard and its survival time in the soil,from 2020 to 2021,soil was collected in the pear orchard of Korla City,Xinjiang,and the pathogenic bacteria were isolated by Zeller selective medi-um by streak separation method,and the pear fire blight bacterium E.amylovora was confirmed by combination of morphological identification,PCR detection and pathogenic test results,and E.amylovora in natural soil was continuously isolated.The results showed that there were pear fire blights in the soil of the diseased pear orchards.Pear fire blight bacteria could survive in soil for up to 550 days,and isolated strains re-mained significantly pathogenic.In this study,the existence and survival time of E.amylovora in the soil of pear orchards in Korla City were studied,and the results had important theoretical significance for the risk assessment of soil as the source of E.amylovora transmission,and pro-vided a scientific basis for the effective prevention and control of pear fire blight.
国家科技期刊平台
NSTL
万方数据
维普
