不同茶树品种对假眼小绿叶蝉抗性的初步研究

PRELIMINARY STUDY ON RESISTANCE OF DIFFERENT TEA VARIETIES TO SMALLER GREEN LEAFHOPPER

在同一生态条件下,茶树品种间假眼小绿叶蝉的虫量存在着明显的差异。发芽迟的品种一般不易感虫,叶背卷、芽叶节间长的品种较易感虫。嫩叶栅状组织及嫩茎皮层厚角细胞厚度是确定是否抗虫的主导因素,假眼小绿叶蝉发生虫量随嫩叶栅状组织和嫩茎皮层厚角细胞厚度加大而减少。

Under the same ecological conditions,there are significant dif-ferences among the population densities of smaller green leafhopperEmpoasca vitis(Gothe)on different tea varieties.In general,the latesprouting varieties are resistant and those with leaves curled down-ward and rather long distances between buds are susceptible to this insectpest.The thicknesses of palisade tissue and thick horny cells in vari-etal of tender shoot are key factors for determining the resistance ofvarieties,the population density of smaller green leafhopper reducedwith the increase of the thickness.