吉祥草炭疽病菌生物学特性研究  

Biological Characterization of the Pathogen Causing Reineckea carnea Leaf Spot Disease

作　　者：傅本重[1,2] 赵文丽[2] 史红安[2] 周勇[1] 王立华[1] 李国元[1] 邹礼平[1] 

机构地区：[1]特色果蔬质量安全控制湖北省重点实验室,生物质资源转化利用湖北省协同创新中心,湖北工程学院生命科学技术学院,湖北孝感432000 [2]西南林业大学林学院,云南昆明650224

出　　处：《北方园艺》2014年第15期116-119,共4页Northern Horticulture

基　　金：国家自然科学基金资助项目(31200488);云南省应用基础研究计划资助项目(2011FB066);特色果蔬质量安全控制湖北省重点实验室开放基金资助项目(2014K02)

摘　　要：以吉祥草炭疽病菌Colletotrichum gloeosporioides为对象,研究了其生物学特性和最佳防治药剂。结果表明：PDA为较适培养基,病原菌生长适温为28℃,致死温度为50℃;在pH为4.0-10.0的范围内均能生长,最适pH为6.0;光照条件以24h/0h（光/暗）为佳。在供试3种药剂中,10%腈菌唑对病原菌抑菌效果最好,在推荐使用浓度0.3mg/L下,相对抑菌率达到91.4%;而45%的石硫合剂抑菌效果最差,在推荐使用浓度6.67mg/L下,其抑菌率仅为8.0%。With Reineckea carnea leaf spot disease as research object,the biological characteristics and suitable fungicide for the pathogen of Reineckea carnea leaf spot were investigated in this paper,in order to provide a scientific basis for the disease control. The results indicated that the pathogen mycelium were grown well in PDA under 28℃ ,the lethal temperature was 50℃. It could be growth in pH 4. 0-10. 0,and prefer to pH 6. 0. The light-dark alternation（24 h/0 h）was benefit for the mycelial growth. Among the 3 tested pesticides,the most effective was 10% myclobutanil ,the relative inhibition rate was 91.4% under the recommended concentration 0. 3 mg/L. Lime sulfur was the least effective,the relative inhibition rate was 8. 0% under the recommended concentration 6. 67 mg/L.

关 键 词：吉祥草 炭疽病 生物学特性 药剂筛选 

分 类 号：S567.239[农业科学—中草药栽培]