打瓜细菌性果斑病品种抗性鉴定及药剂筛选研究

通过人工接种的方法,对“红大片”、“红小片”、“新籽一号”、“民籽一号”、“黑丰大板”和“内蒙黑中片”6个打瓜品种进行打瓜细菌性果斑病的抗性鉴定.结果表明:“黑丰大板”、“内蒙黑中片”的抗性较强,属于中抗品种；“新籽一号”、“民籽一号”属于中感品种；“红大片”、“红小片”抗性较差,属于感病品种,未发现高抗或免疫品种；用9种杀菌剂对打瓜细菌性果斑病进行了室内、盆栽防治试验,所有供试药剂对该种病害防治效果都不理想,其中较好的为53％氢氧化铜粉剂1.5 g/L,防治效果为54.6％.

Study on Watermelon Cultivars Resistant and Chemical Screening to Acidovorax avenae subsp. citrulli

By the method of artificial infection,’Hongdapian’,’Hongxiaopian’,’Xinzi No.1’,Minzi No.1’,’Heifengdaban’,’Neimengheizhongpian’six kinds of cultivars of watermelon were evaluated to identify their resistance to Acidovorax avenae subsp.citrulli.The results showed that’Heifengdaban’ and ’Neimengheizhongpian’were identified to be moderately resistant,’Xinzi No.1’and Minzi No.1’ moderately susceptible,’Hongdapian’and’Hongxiaopian’ highly susceptible.Nine bactericides were tested for control to Acidovorax avenae subsp.citrillit,bactericides showed different degree of antibacterialactions,all of them,53% copper bhydroxidethe 1.5 g/L was the best bactericide to control the disease,control effect could reach to 54.6%.