热带亚热带水果胶孢炭疽菌对多菌灵的抗药性测定  

Carbendazim Resistance of Colletotrichum gloeosporioides on Tropical and Subtropical Fruits

作　　者：张新怡[1] 李雪[1] 高兆银[2] 

机构地区：[1]海口景山学校海甸分校,海南海口570208 [2]中国热带农业科学院环境与植物保护研究所,海南海口571101

出　　处：《热带农业科学》2014年第11期71-74,共4页Chinese Journal of Tropical Agriculture

基　　金：公益性行业(农业)科研专项(No.201303077-1);中央级公益性科研院所基本科研业务费专项(No.2011hzs1J004)

摘　　要：采用生长速率法对来自海南18种热带亚热带水果的893株胶孢炭疽菌(C.gloeosporioides)进行多菌灵抗药性测定。结果表明:在供试菌株中,11.87%的菌株对多菌灵产生了不同程度的抗性,且高抗菌株达9.63%,具有抗多菌灵的C.gloeosporioides菌株主要来自芒果、荔枝和龙眼等14种水果。多菌灵对供试菌株的毒力存在差异,EC50值的最高值与最低值相差4.17×105倍,EC90值的最高值与最低值相差7.49×106倍。建议在热带亚热带水果病害防治中,慎用多菌灵等苯并咪唑类杀菌剂,选择作用机制不同的杀菌剂交替使用,延缓抗药性的产生,提高杀菌剂的防效。893 isolates of Colletotrichum gloeosporioides collected from 18 tropical and subtropical fruits in Hainan Province were characterized for resistance to carbendazim by mycelia growth method. The results showed that the isolates had serious resistance to carbendazim with resistance frequency of 11.87%, and 9.63% isolates belonged to high level resistance. The EC50 value and EC90 value of test isolates ranged from 0.03 μg/mL to 12 511.80 μg/mL and 0.15 μg/mL to 1 123 446.50 μg/mL, and the EC50max/EC50min and EC90max/EC90 min reached 4.17×105 and 7.49×106. The resistant isolates were collected from 14 fruits such as mango, litchi and longan. To avoid the resistance of the pathogen to fungicides, and increase the control effect, Benzimidazole fungicides should be cautiously used and different mechanism＆#39;s fungicides should be used by turns.

关 键 词：热带亚热带水果 胶孢炭疽菌 多菌灵 抗药性 

分 类 号：S436.67[农业科学—农业昆虫与害虫防治]