CAJ | 학술논문

辣椒疫病是辽宁省辣椒生产上的重要病害，开展辽宁省辣椒疫病病菌生理小种鉴定，可为抗疫病辣椒新品种的选育提供理论依据。对来源于辽宁省不同辣椒产区的30个病样进行了分离鉴定，经致病性测定和形态特征观察，确定所分离的病菌均为辣椒疫霉菌(Phytophthora capsici Leonian)；利用中国辣椒疫霉菌生理小种鉴别通用寄主，对其进行了生理分化鉴定。根据供试菌株在鉴别寄主上的抗感反应，鉴定结果表明：辽宁地区辣椒疫霉菌划分为1号、2号和3号生理小种，发生频率分别为3.33%、26.67%和70%；其中3号生理小种为辽宁省辣椒疫霉菌的优势小种。从不同地区测定结果表明不同生理小种的分布与地域间的相关性不强。
랄초역병시요녕성랄초생산상적중요병해，개전요녕성랄초역병병균생리소충감정，가위항역병랄초신품충적선육제공이론의거。대래원우요녕성불동랄초산구적30개병양진행료분리감정，경치병성측정화형태특정관찰，학정소분리적병균균위랄초역매균(Phytophthora capsici Leonian)；이용중국랄초역매균생리소충감별통용기주，대기진행료생리분화감정。근거공시균주재감별기주상적항감반응，감정결과표명：료녕지구랄초역매균화분위1호、2호화3호생리소충，발생빈솔분별위3.33%、26.67%화70%；기중3호생리소충위요녕성랄초역매균적우세소충。종불동지구측정결과표명불동생리소충적분포여지역간적상관성불강。
Phytophthora capsici is an important disease in Liaoning Province’s pepper production. To identify the physiological races of Phytophthora capsici in Liaoning Province may provide the theoretical basis for breeding new varieties of anti-blight. This study determined 30 isolates collected from different pepper-cultivating regions in Liaoning Province. Based on their pathogenicity test and morphological characteristics, these isolates were identified as Phytophthora capsici Leonian. We identify the races by using differential hosts which China recognized. According to reaction of resistance or susceptibility in hosts, the result indicated that there were race 1, race 2 and race 3 of Phytophthora capsici in Liaoning Province, their frequency were 3.33%, 26.67% and 70% respectively. Race 3 is the superior race in Liaoning Province. Different regions of the test showed that the correlation between distribution of different races and geographical were not strong.