【摘要】 以蒙自市草坝镇辣椒黑斑病病果为试材,采用平板划线法分离,科赫法则验证,形态特征比对,菌丝生长速率法,研究了辣椒黑斑病菌的分类地位、生物学特性及药敏性。结果表明:云南省蒙自市辣椒黑斑病由链格孢属Alternariasp.侵染引起;病菌菌丝生长最佳条件为玉米琼脂(MA)培养基、可溶性淀粉为碳源、甘氨酸为氮源、pH 8、温度25℃、全光照;该病菌对58%甲霜灵·锰锌WP和50%扑海因WP药敏性最高。该结论可为其防治提供基础数据。更多还原

【Abstract】 Taking pepper fruit of black spot as material,pathogen was isolated by streak plate method,it was identified by Koch’s postulates and morphology,and tested the biological characteristics and fungicide sensitivity by mycelium growth rate method.The results showed that pathogen of pepper black spot from Mengzi Yunnan province was caused by Alternariasp..Optimum conditions for mycelial growth were maize agar(MA)medium,soluble starch as carbon source,glycine as nitrogen source,25℃,pH 8,full of light.58% metalaxyl·mancozeb and 50%iprodione wettable powder were the most sensitivity than other fungicides for the pathogen.This conclusion provided theoretical parameter for the control of pepper black spot.更多还原