雪松叶枯病病原菌及其生物学特性  

Pathogen of Leaf Blight of Cedar and Its Biological Characteristics

作　　者：任国兰[1] 时向阳[1] 郑铁民[1] 孔黎黎[1] 董西良 黄文秀[1] 

机构地区：[1]河南农业大学,河南省荥阳县林科所,河南省南阳地区林科所

出　　处：《华北农学报》1994年第3期76-80,共5页Acta Agriculturae Boreali-Sinica

摘　　要：１９８７～１９８９年连续３年观察了雪松叶枯病的症状特点，分离培养出致病的病原菌，根据其分生孢子形态，鉴定为柳杉拟盘多毛孢菌［ＰｅｓｔａｌｏｔｉｏｐｓｉｓＣｒｙｐｔｏｍｅｒｉａｅ（Ｃｏｏｋｅ）Ｓｕｎ．］该菌分生孢子萌发适温为２５～３０℃，相对湿度为９８％～１００％。ｐＨ值为４～６。在１０％雪松汁液中萌发率最高。在ＰＤＡ培养基上生长最好，在查彼氏、麦芽糖上生长较好，在甘露糖、黄豆培养基上生长一般，在乳糖上生长差。The symptom of leaf blight of cedar was observed and the germ of the disease was isolated from 1987 to 1989.The pathogen was identified as Pestalotiopsis cryptomeriae(Cooke)Sun.based on the morphology of the conidia.The best condition for conidium germination was 25～30℃ and 98～100% ralative humidity with pH4～6.The germination rate of the conidia was highest in the suspension with 10% cedar leaves.The colony grew best on PDA,better on Czapex's culture and maltose,general on mannose and soybean and worst on lactose.

关 键 词：雪松 叶枯病 生物学特性 病原菌 

分 类 号：S763.712.1[农业科学—森林保护学]