新疆瓜类细菌性果斑病品种抗病性鉴定

Identification of Citrull Resistance to Acidovorax avenae subsp. Citrulli in Xinjiang

瓜类细菌性果斑病(Acidovorax avenae subsp.Citrulli)是新疆甜瓜和籽瓜上最重要的病害之一,而且有逐渐扩展的趋势;利用抗病品种是防治该病重要措施。通过苗期室内喷雾接种法,对新疆的主要的15个哈密瓜品种或品系、2个籽瓜及15个西瓜品种进行苗期抗病性鉴定,结果显示:待测的所有哈密瓜、籽瓜和西瓜品种或品系在发病程度上虽有明显的差别,但均不抗病,其病情指数都在40以上。西瓜和籽瓜的抗病性较哈密瓜要强;品种的染色体倍型和生育期与抗病性也没有明显的相关性。

Acidovorax avenae subsp. Citrulli is one of the most important diseases of muskmelon and edible seed watemelon （Citrullus lanatus vat. lanatus） in Xinjiang. Resistant varieties are the most effective measure to control Acidovorax avenae subsp. Citrulk In this study, the resistance of 15 Ha-mi melon,2 edible seed watermelon and 15 watermelon were identified in greenhouse by spraying Acidovorax avenae subsp. The results showed that all of them were susceptible, and their disease index exceed 40. The resistance of watemelon and edible seed watemelon were higher than Ha-mi melon. We found that it was no obvious correlation between the resistance and chromosome types, growing period.