不同甜瓜材料苗期细菌性果斑病抗性鉴定

Identification of Resistance to Acidovorax citrulli of Different Melons in the Seedling Stage

以25份不同甜瓜材料为试材,采用苗期喷雾接种法,分析研究了不同甜瓜材料对果斑病的抗性,为甜瓜抗病性育种提供参考。结果表明:筛选出T1、T4、T11等中抗材料8份,中感材料8份,T6、T12、T13等感病材料9份,没有免疫和高抗材料;另外,田间植株表现病害的T12、T13、T20等材料均属于中感或感病级别。T1、T4等抗性较高材料与T6、T12等感病材料抗病指数有明显的差异。

Taking 25 different varieties of melon as materials,using the method of seedling stage spray inoculation,the resistance to Acidovorax citrulli of the melons was studied,to provide reference for resistant breeding.The results showed that 8middle resistant varieties included T1,T4,T11,etc,the 8middle sensitive varieties and 9high sensitive varieties included T6,T12,T13,etc.No immune and high resistant materials.In addition,the field of plant disease symptoms T12,T13 and T20materials all belonged to the level of high or middle sensitive.The materials resistance index of high resistance varieties such as T1,T4 between high sensitive varieties such as T6,T12 material had obvious differences.