| 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 |
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| 引用本文： | 颜惠霞,徐秉良,梁巧兰,薛应钰,陈荣贤,梁志福.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[J].植物保护,2009,35(1):79-81. |
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| 作者姓名： | 颜惠霞 徐秉良 梁巧兰 薛应钰 陈荣贤 梁志福 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金，甘肃省中青年科技基金 |
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| 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。
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| 关 键 词： | 南瓜 白粉病 叶绿素 气孔 抗病性 |
Effects of chlorophyll content and stoma density on pumpkin resistance to powdery mildew |
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| Yan Huixi,Xu Bingliang,Liang Qiaolan,Xue Yingyu,Chen Rongxian,Liang Zhifu.Effects of chlorophyll content and stoma density on pumpkin resistance to powdery mildew[J].Plant Protection,2009,35(1):79-81. |
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| Authors: | Yan Huixi Xu Bingliang Liang Qiaolan Xue Yingyu Chen Rongxian Liang Zhifu |
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| Institution: | 1. College of Grassland Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem,Ministry of Education, Sino U.S. Center for Grazingland Ecosystem Sustainability, Lanzhou730070, China; 2. Wuwei Jinpingguo Co. Ltd., Gansu733000, China |
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| Abstract: | Ten pumpkin cultivars 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 cultivars. The cultivars Sanxing, Hongli and Tianli appeared to be highly resistant. The cultivar Erxing, Riben, Jingou and Jingyu were resistant, but Guangban, Tianran and Hongfu were susceptible. Mechanism of cultivar resistance was evaluated using the content of chlorophyl1, 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． |
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| Keywords: | pumpkin powdery mildew chlorophyll stoma resistance |
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