摘要： 冬枣黑点病主要为害冬枣果实，在果面上产生黑斑，影响果实的外观及品质。2004~2005年连续2年对河北省黄骅市的不同枣区采集的病果进行分离接种及再分离，结果证实冬枣黑点病病原为：桑壳小圆孢菌（Coniothyriumfucsidulum Sacc）、仁果茎点霉（Phoma pomirumThü；m）以及细极链格孢（Alternaria alternata（Fr.）Keissler），其中（Conio-thyrium fucsidulumSacc）和（Phoma pomirumThü；m）既可单独侵染，也可混合侵染，（Alternaria alternata）只参与混合侵染。
关键词:
冬枣,
黑点病,
桑壳小圆孢菌,
仁果茎点霉,
链格孢
Abstract: The symptoms of the dongzao jujube black-spot disease which induced the fruit black spot affect the fruit commercial value and its quality.The disease is named according to its characteristics of the symptoms.The pathogens were investigated by using Koch's Rule in a two-years-test from 2004 to 2005.With samples from four jujube farms in Huanghua city and three fungi related to the disease were identified.They were,Coniothyrium fucsidulum Sacc,Phoma pomirum Thüm and Alternaria alternate(Fr.) Keissler.Coniothyrium fucsidulum Sacc and Phoma pomirum Thüm could infect the dongzao jujube fruits singly and jointly,but Alternaria alternata(Fr.) Keissler only coulde infect the dongzao jujube fruits jointly with other pathogens in the laboratory and field tests.
Key words:
Dongzao,
Black_spot disease,
Coniothyriumfucsidulum Sacc,
Phoma pomirum Thü,
m,
Alternaria alternate ( Fr.) Keissler.
中图分类号:
宗淑萍, 杨文香, 刘大群, 张汀. 冬枣黑点病病原鉴定[J]. 华北农学报, 2006, 21(5): 105-107. doi: 10.3321/j.issn:1000-7091.2006.05.025.
ZONG Shu-ping, YANG Wen-xiang, LIU Da-qun, ZHANG Ting. Identification of the Pathogen of Dongzao Jujube Black-spot Disease[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(5): 105-107. doi: 10.3321/j.issn:1000-7091.2006.05.025.