摘要： 近年在河北省、山东省等地的冬枣果实上发现一种新病害-冬枣黑疔病，又称黑斑病或果实黑点病。经2004-2005年在河北省和山东省7市县调查，从18批次219个冬枣病果样品中分离得到653个分离物，经筛选、纯化和回接试验，依照柯赫氏法则对冬枣黑疔病病原菌进行了研究，根据病原菌的形态特征，病原菌鉴定为毁灭茎点霉Phoma destructiva Plowr.和细交链孢Alternaria alternata(Fr.)Keissler。

关键词: 冬枣, 黑疔病, 病原菌鉴定

Abstract: A new disease-Dongzao jujube black spot in Hebei and Shandong provinces was reported. The black spot of Dongzao jujube has been studied in the laboratory and in fields during 2004-2005. 653 isolates from 219 infected Dongzao jujube samples from eighteen times of sample collection were selected, purified and reinoculated. The pathogens were inoculated on fruits through wounds and on surface directly. According to Koch's Rule and cultural and morphological characters, two fungal pathogens were identified as Alternaria alternata (Fr.) Keissler and Phoma destructive Plower.

Key words: Dongzao jujube, Black spot, Identification of pathogens

中图分类号: 

• S665.1