一种西葫芦根腐病病原鉴定及其致病范围

Pathogen identification of zucchini root rot disease and its pathogenic range of vegetables

针对京郊发生的西葫芦根腐病,采用形态学和分子生物学方法鉴定病原菌,并对该病原菌的致病范围进行了测定,目的是为该病害的有效防控提供依据。结果表明,京郊发生的西葫芦根腐病病原菌为腐皮镰刀菌。致病范围试验结果表明,人工接种该病原菌后,葫芦科蔬菜都能感病,不同种类以及不同品种之间的感病性存在差异,发病率为10.00%~100.00%。其中西葫芦感病最严重,供试的4个品种发病率均为100.00%;茄科和十字花科蔬菜均不感病,供试品种的发病率均为0。建议在生产上西葫芦可以与茄科作物、十字花科作物轮作,减轻腐皮镰刀菌根腐病的危害。

The objectives of this study was to identify the pathogen of zucchini root rot disease in Beijing suburb according to the morphological and molecular characteristics,and test its pathogenic range of vegetables,to control the disease effectively.The results showed that the pathogen belonged to Fusarium solani.By inoculating this pathogen on various vegetables,the pathogenic range test showed that all tested cucurbitaceae vegetables were susceptible to this pathogen.Different species or varieties of cucurbitaceous vegetables showed different susceptibility to the pathogen,incidence rate was between 10.00%-100.00%,among which zucchini plants were the most susceptible,the incidence rate of the 4 tested varieties was 100.00%.Solanaceous vegetables and cruciferous vegetables were unsusceptible to the pathogen,the incidence rate of the tested varieties was 0.It is suggested that the infection of Fusarium solani can be reduced by rotation of zucchini with Solanaceae and Cruciferae crops in production.