南瓜品种对白粉病的抗病性与叶绿素含量和气孔密度的相关性  

Effects of chlorophyll content and stoma density on pumpkin resistance to powdery mildew

作　　者：颜惠霞[1] 徐秉良[1] 梁巧兰[1] 薛应钰[1] 陈荣贤 梁志福 

机构地区：[1]甘肃农业大学草业学院、草业生态系统教育部重点实验室、中-美草地畜牧业可持续发展研究中心,兰州730070 [2]甘肃省武威金苹果有限责任公司,733000

出　　处：《植物保护》2009年第1期79-81,共3页Plant Protection

基　　金：国家自然科学基金(30671267);甘肃省中青年科技基金(3XZ051-A25-015)

摘　　要：不同南瓜品种对白粉病的抗病性测定结果表明,供试的10个南瓜品种中存在明显的抗病性差异,品种三星、红栗、甜栗表现为高抗;品种二星、日本、金钩、京域表现为抗病;品种光板、天然、红福表现为感病。品种抗病性与南瓜叶片叶绿素含量的高低和叶片气孔数量关系的研究结果表明,南瓜叶片中叶绿素的含量与南瓜品种对白粉病的抗性呈正相关,而气孔密度与抗病性呈负相关。Ten pumpkin cuhivars were used to identify their resistance to powdery mildew and related mechanism in this paper. The results showed that the resistance varied significantly among these cuhivars. The cuhivars Sanxing, Hongli and Tianli appeared to be highly resistant. The cuhivar Erxing, Riben, Jingou and Jingyu were resistant, but Guangban, Tianran and Hongfu were susceptible. Mechanism of cuhivar resistance was evaluated using the content of chlorophyll, the number and size of stoma. The results showed that resistance was positively correlated to the content of chlorophyll, and negatively correlated to the stomata density .

关 键 词：南瓜 白粉病 叶绿素 气孔 抗病性 

分 类 号：S436.42[农业科学—农业昆虫与害虫防治]