104. Effect of Anti-Nematode Preparations on Physiological Traits of Cucumber Leaves Affected by Root-Knot Nematode

This paper was to study the effects of anti-nematode preparations with different mechanisms on changes of enzyme systems and membrane permeability of cucumber leaves, so as to provide reference basis for effective control of soil root-knot nematode in greenhouse. With cucumber seedlings affected by root-knot nematode as material, changes of superoxide dismutase (SOD), peroxidase (POD), relative conductivity in cucumber were tested after the seedling soil was treated by preparations of Wuxianmei, Hailvsu, Duxiandna, and Avermectin. After treated by different preparations, SOD and POD activity of cucumber leaves were higher than control, and that treated by Wuxianmei was the highest. In addition to Duxiandna, the relative conductivity content of other treatments were significantly lower than control. When cucumbers were planted for 70 days, the effect of Avermectin against root-knot nematode was the best of 64.7 %. After cucumbers were infected by root-knot nematode, different preparation treatments all had certain control effect, which made the physical indicators of cucumber have obvious change.