不同寄主植物对小地老虎生长发育和保护酶活性的影响
Effects of various host plants on development and protective enzyme activities of black cutworm, Agrotis ypsilon (Rottemberg)
张林林,许向利，仵均祥
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作者单位：西北农林科技大学植物保护学院应用昆虫学重点实验室
中文关键词：小地老虎；寄主植物；营养成分；发育；保护酶活力
英文关键词：Agrotis ypsilon; host plant; nutrient content; development; protective enzyme activity
中文摘要：通过室内饲养和生物化学测定，研究了白菜（Brassica campestris ssp. Pekinensis）、大豆（Glycine max Merrill）和玉米（Zea mays L.）3种寄主植物的营养差异及对小地老虎幼虫发育、成虫产卵、成活率及6龄幼虫体内超氧化物歧化酶（SOD）、过氧化物酶（POD）、过氧化氢酶（CAT）活力的影响。结果表明：供试3种寄主植物的可溶性蛋白、可溶性糖和含水量差异显著。与取食玉米和白菜的个体相比，取食大豆的小地老虎幼虫历期、蛹期较短，分别为43.02d和11.87d；雌虫成虫寿命最长，为15.92d；单雌产卵量最高，为936.67粒。但后代卵的孵化率以取食玉米的最低。取食3种寄主植物的幼虫和蛹的成活率由高到低依次为取食大豆>取食白菜>取食玉米。CAT没有显著差异，但幼虫SOD、POD活力由高到低依次为取食大豆>取食白菜>取食玉米。
英文摘要：The main nutrient components of the Chinese cabbage Brassica campestris ssp. Pekinensis, soybean Glycine max Merrill and corn Zea mays L. were studied using biochemistry analysis. The effects of these host plants on development, oviposition and survival rate of black cutworm Agrotis ypsilon (Rottemberg), as well as the protective enzyme activities in the 6th instars larvae were compared. Results showed that there were significant differences of the contents of soluble protein, soluble sugar and water in Chinese cabbage, soybean and corn. A. ypsilon individuals feeding on soybean had shorter larval and pupae duration than corn and Chinese cabbage, female have longer longevity and each laid more eggs which were 43.02 d, 11.87 d, 15.92 d, 936.67 eggs, respectively. But the egg hatching percentage was the lowest by feeding corn. The survival rate of larvae and pupae ranked as soybean >Chinese cabbage >corn. There was no significant difference in the activity of catalase (CAT), but the activity of superoxide dismutase (SOD) and peroxidase (POD) were different in the 6th instars larvae ranked as soybean >Chinese cabbage >corn.