香蕉品种对香蕉细菌性软腐病的抗性鉴定

Resistance identification of banana varieties to banana bacterial soft rot caused by Dickeya(Pectobacterium chrysanthemi pv.paradisiaca)

由菊欧文氏杆菌香蕉致病变种[Dickeyaparadisiaca(原名Pectobacterium chrysanthemi pv.paradisiaca)]引起的香蕉细菌性软腐病是我国新入侵的毁灭性香蕉病害,应用抗病品种将是防治该病害的有效方法。采用离体叶片法和盆栽法相结合的筛选方法对39个香蕉品种进行抗性鉴定,结果表明,供试品种对香蕉细菌性软腐病菌的抗性存在明显差异,其中表现高抗(HR)的品种为‘皇帝蕉’,抗病(R)品种为‘红河矮’,中抗(MR)品种为‘矮脚遁地蕾’和‘龙州中把’。离体和盆栽鉴定结果与品种田间抗病性一致,可有效、快速、准确地筛选出抗病品种。

Banana bacterial soft rot caused by Dickeya paradisiaca （Pectobacterium chrysanthemi pv. paradisiaca） was a new devastating invasive disease in China, and using resistant varieties would be an effective method to control the disease. Detached leaf method and pot experiments were used to identify the resistance of 39 banana varieties. The results showed that the levels of resistance of these 39 banana varieties were different, among which ＇ Huangdi Banana＇ was highly resistant （HR）, ＇ Red Dwarf ＇was resistant （R）, and ＇ Aijiao Dundilei＇ and ＇ Long- zhou Zhongba＇ were moderately resistant （MR）. Such method could identify resistant varieties effectively, rapidly and accurately, and the resistance results by detached leaf and pot experiments were consistent with those by the field experiments.