福建主要茶树品种间假眼小绿叶蝉种群动态及其抗虫性比较

Comparison of the Population Dynamics of Empoasca vitis (Gthe) on Six Tea Varieties and Their Resistance to Pests

通过比较福建6个主要茶树品种(福云6号、福鼎大白茶、毛蟹、黄棪、铁观音、肉桂)之间假眼小绿叶蝉Empoasca vitis(G the)的种群数量动态,结果表明:福建6个主要茶树品种之间抗假眼小绿叶蝉的特性存在明显差异,其中以肉桂和铁观音品种对假眼小绿叶蝉的抗性较强。进一步分析该6个茶树品种主要生化成分含量与叶蝉种群数量的关系,发现假眼小绿叶蝉的种群数量与各品种茶梢中的没食子儿茶精(gallo catechin,GC)含量呈显著负相关,与咖啡碱的含量呈负相关。这说明GC和咖啡碱是茶树抗假眼小绿叶蝉的重要成分。

A research on the population dynamics of the small green leafhopper, Empoasca vitis （Gothe）, on 6 tea varieties were conducted during May to September, 2005 in Fujian. The correlationships between the population dynamics of leafhopper and some main biochemieals in the 6 tea varieties were analysed. The results revealed that the varieties Rougui and Tieguanyin posseess higher resistance to small green leafhopper than the other 4 varieties investigated. The population dynamics of small green leafhopper were significantly negatively correlated with the contents of gallo catechin（GC）,and negatively correlated with the contents of caffeine, both of which showed an important resistant role to the small green leafhopper.