生物灾害科学Issue(3)：262-264,271,4.DOI:10.3969/j.issn.2095-3704.2013.03.005
1种辣椒新炭疽病的初步鉴定及室内药剂筛选
Identification of a New Anthracnose of Peppers and Screening of Fungicides
摘要
Abstract
Anthracnose was an important disease of peppers, influencing their yield and quality. A new anthracnose only appearing on the pepper fruits was found in the production of pepper cultivars“XinXiang 15”. Its typical lesion was oval in shape with tawny powder at the center,and with outer water soaked zones, but without concentric black dots. The new anthracnose was difficult to control by using the general fungicides. It was found that no seta was observed on conidia. Conidia were single-celled, 12.5 μm×3.75 μm in size, with a sub-acute end and oil droplets in each cell after keeping the humidity and detecting the mildew by microscope. The pathogen was identified as Collectotrichum acutatum Simmonds after isolating and culturing and validating by Koch’s Rule. In order to obtain the better fungicides to control the new anthracnose disease, inhibition effects of 8 fungicides against the fungal from pepper cultivars“XinXiang 15”were detected by Oxford-Cup in vitro. The results showed that 250 g/L propiconazole EC diluted 3 000 times had obvious inhibition effects and long duration time, which could be regarded as a candidate fungicide to control the new anthracnose caused by Collectotrichum acutatum on peppers. This research provided theoretic evidences and fungicide references for the new anthracnose control.关键词
尖孢炭疽菌/辣椒炭疽病/杀菌剂/抑菌效果Key words
Collectotrichum acutatum/pepper anthracnose/fungicide/inhibition effects分类
农业科技引用本文复制引用
刘冰,王连英,黄新根,崔汝强,宋水林..1种辣椒新炭疽病的初步鉴定及室内药剂筛选[J].生物灾害科学,2013,(3):262-264,271,4.基金项目
江西农业大学博士启动基金和江西农业大学科技基金 （）
