不同辣椒品种对细菌性斑点病抗病性鉴定与分析

Identification and Analysis of the Resistance of Different Chili Pepper Varieties to Bacterial Spot Disease

近年辽宁大型育苗企业辣椒细菌性斑点病发生严重,为有效利用辣椒抗病优质品种,试验采用人工接种的方法在辣椒8片真叶期对30份辽宁主栽辣椒品种进行室内抗病性鉴定工作。研究结果表明:神禾8819与韩国红峰平均病指13.92与14.42,为抗病品种(R);万金早椒与新品线椒玉平均病指17.17与15.25,为中抗品种(MR),4个品种均为线椒。其余3个甜椒、3个羊角椒、9个牛角椒、4个麻辣椒,7个螺丝椒平均病指在30.1~40.0,均为感病品种(S)。研究结果可为我省辣椒生产优选抗病品种与品种推广提供依据。

In recent years,there has been a significant increase in the incidence of bacterial spot disease in chili pepper within large-scale seedling enterprises in Liaoning province.In this study,30 main chili pepper varieties grown in Liaoning province were assessed for indoor disease resistance through artificial inoculation at the 8th true leaf stage in order to increase yield and quality of chili pepper varieties.The results showed that Shenhe 8819 and Korean Red Peak were classified as resistant varieties(R)with disease indexes of 13.92 and 14.42,respectively.Conversely,Wanjin Early Pepper and New Line Pepper Jade were classified as moderately resistant varieties(MR)with disease indexes of 17.17 and 15.25,respectively.All four types being studied are classified as linear peppers.The remaining three sweet peppers,three rambutan peppers,nine cow peppers,four jalapenos,and seven screw peppers were classified as susceptible varieties(S)with disease indexes ranging from 30.1 to 40.0.These findings could provide a scientific basis for the preferential selection of disease-resistant varieties and variety promotion for chili pepper production in Liaoning province.