氮与钙营养对香石竹叶片PPO、POD和叶斑病抗性的影响  

Effects of Nitrogen and Calcium on Polyphenol Oxidase, Peroxidase and the Resistance to Leaf Spot in Carnation

作　　者：魏胜林[1] 刘业好[1] 屈海泳[1] 曹军[1] 叶辉[1] 

机构地区：[1]安徽农业大学园艺系,合肥230036

出　　处：《安徽农业大学学报》2002年第1期78-81,共4页Journal of Anhui Agricultural University

摘　　要：通过用不同浓度的 NO3- 、 Ca2 + 营养液对香石竹施肥 ,并对香石竹进行叶斑病接种 ,结果表明 :营养液中 NO3-浓度在 2 40～ 2 5 0 mg/ kg,Ca2 +浓度在 2 2 0～ 3 42 mg/ kg范围内 ,有利于香石竹叶片钙含量的提高和 PPO、 POD活性保持较高水平 ,能增强植株自身对病原菌的抵抗能力 ,减轻褐斑病的发病程度。叶钙含量与PPO、POD活性呈极显著正相关 (r PPO* * =0 .92 4,r POD* * =0 .93 8) ,营养液 NO3-浓度与叶钙含量呈负相关 r=-0 .1 2 2 )。The carnation was spread with different concentrations of nitrogen,calcium and inoculated with leaf spot in this experiment.The result showed that the nutrition (NO 3 - 240～250 mg/kg,Ca 2+ 220～342 mg/kg) was helpful to maintain higher level of activities of POD and PPO,enhanced the carnation's resistance to the germs, and reduced the injury of leaf spot. The content of calcium in leaf was showed a significant positive correlation with the activity of polyphenol oxidase and peroxidase (r ** =0 924, r ** =0 938),and the content of nitrogen was a negative correlation with the content of calcium (r=-0 1222).

关 键 词：氮 钙 PPO POD 香石竹 叶班病 营养 叶片 抗性影响 切花 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治] S681.5[农业科学—植物保护]