褐飞虱体内保幼激素滴度变化及其与翅型分化的关系

Abstract

Abstract: The high performance liquid chromatography (HPLC)and radiochemical method were applied to determine the dynamics of juvenile hormone titer and JH esterase activity in the nymphal stages of brown planthopper.The results showed that the JH titers between brachypters and macropters were obviously different in the 4th instar nymphs of both male and female and in the early 5th instar nymph of male.Therefore, these nymphal instars could be considered to be the critical period for wing dimorphism determination,which had been verified with topical application of methoprene (ZR-515).

Key words: brown planthopper, wingform determination, JH titer

DAI Hua-guo,WU Xiao-yi,WU Shu-wen. The change of juvenile hormone titer and its relation with wingdimorphism of brown planthopper,Nilaparvata lugens[J]., 2001, 44(1): 27-32.

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The change of juvenile hormone titer and its relation with wingdimorphism of brown planthopper,Nilaparvata lugens

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