摘要： 1992～1994年在河北省和河南省8个县采集枣缩果病病果，经柯赫法则程序诊断及对分离菌的鉴定，查明导致枣缩果病原主要是:1.盾壳霉属的一种真菌Coniothyrium sp；2.细链隔孢菌Afternaria tenuis Nees；3.半知菌亚门无孢目有隔有色丝状菌；4.一种细菌。前三种均属半知菌亚门的弱寄生菌，年份和地区的不同分离菌出现频率不完全一致。上述四种菌三年累计分离率分别为14.90%、12.96%、11.47%和11.11%，而这四种菌占已出现的菌落比率分别为30.28%、25.79%、23.30%和20.63%。

关键词: 枣缩果病, 分离培养, 接种, 病原鉴定

Abstract: Diseased fruits of jujube fruit shrink were collected in eight counties of Hebei and Henan provinces.Pathogens which were isolated from diseased fruits were diagnosed and identified according to Koch’s principles.The pathogens are Coniothyrium sp.Alternaria tenuis Nees, a fungus belonged to Agonomycetales and a kind of bactrium.The former three are all weak parasitic fungi belonged to Deuteromycotina.Different appearing frequencies were obtained in different years and locations.From 1992 to 1994 the total isolating rates of the four pathogens were 14.9%,12.96%, 11.47%and 11.11%, respectively.The proportions among the four pathogens were 30.28%,25.79%,23.30% and 20.63%.

Key words: Fruit shrink of jujube, Isolation and culture, Inoculation, Identification of pathogens

中图分类号: 

• S436.65