摘要
叶基腐病是蝴蝶兰的1种重要病害。经组织分离，致病性测定，鉴定其病原菌有性阶段为红球丛赤壳（Nectria haematococca），无性阶段为茄病镰刀菌（Fusarium solani），首次发现叶基腐病的有性阶段。病原菌生长的温度范围在13-38℃，最适温度为28℃；病原菌要求较高的湿度，相对湿度90％以上有利于分生孢子萌发；该菌能适应于较广泛的pH值范围，但以pH为6．5时最适，它能有效地利用多种碳源，但以蔗糖和葡萄糖为最佳；也能利用多种氮源，其中以蛋白胨、尿素、硝酸铵为好，而硫酸铵、磷酸二氢铵不利于病菌生长及产孢。
The sexual and asexual phases of pathogens isolated from the leaf butt rot of Phalaenopsis belong to the Nectria Haematococa and Fusarium solani respectively. The temperature suitable for the growth of the pathogens ranged from 13 ℃ to 38 ℃, and the optimum was 28 ℃. The relative humidity for conidia germination ranged from 90 % to 100 %. The pathogen grew in a relative broad range of pH values from 3 to 12, with an optimum pH 6.5 for the mycelial growth and sporulation. The pathogen grew and sporulated better in the media using sucrose and glucose as the carbon sources, and peptone and urea as the nitrogen sources.
出处
《热带作物学报》
CSCD
2007年第4期93-97,共5页
Chinese Journal of Tropical Crops
基金
福建省自然科学基金项目资助(Z0516061)
