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当前位置: 首页 > 文章 > Susceptibility to Insecticides and Ecological Fitness in Resistant Rice Varieties of a Field Nilaparvata lugens Stål (Hemiptera: Delphacidae) Population Free from Insecticides in the Laboratory 水稻科学(英文版) 2014,21 (3)
Position: Home > Articles > Susceptibility to Insecticides and Ecological Fitness in Resistant Rice Varieties of a Field Nilaparvata lugens Stål (Hemiptera: Delphacidae) Population Free from Insecticides in the Laboratory Rice Science 2014,21 (3)

Susceptibility to Insecticides and Ecological Fitness in Resistant Rice Varieties of a Field Nilaparvata lugens Stål (Hemiptera: Delphacidae) Population Free from Insecticides in the Laboratory

作  者：
Yajun Yang;Biqin Dong;Hongwei Xu;Xiaodong Zheng;K. L. Heong;Zhongxian L
单  位：
State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China;CABI South East Asia, PO Box 210 UPM Serdang, Malaysia;College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China;State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Chin
关键词：
insecticides;generation;generations;fold;tn1;ir2
摘  要：
A population of rice brown planthopper (BPH) Nilaparvata lugens collected from a paddy field in Hangzhou was successively reared on susceptible rice Taichung Native 1 (TN1) in a laboratory free from insecticides for more than 14 generations. The changes in susceptibility to insecticides and ecological fitness on different resistant rice varieties were monitored in each generation. The resistance ratio to imidacloprid sharply declined with the succession of rearing generations without insecticides from 359.94-fold at F1 to 6.50-fold at F14 compared with the susceptible strain, and the resistance ratio to chlorpyrifos was from 9.90-fold at F1 to 5.94-fold at F14. Nymphal duration and weights of newly hatched female adults were significantly affected by rice variety, generation and their interactions, but nymphal survival was significantly affected by the generation only. The ratio of brachypterous adults in males was affected by the generation and generation × variety interaction, whereas no difference was found in females. Nymphal duration extended with increasing generations, and the female nymphal duration was shorter in the susceptible variety TN1 than those in the resistant varieties IR26 and IR36. In addition, the female adult weight in TN1 was higher than those in IR26 and IR36. These results indicated that the resistance of field BPH population to insecticides was reversed after several generations of no-exposure to insecticides, and the ecological fitness in TN1 was higher than those in IR26 and IR36. These findings suggested the rational and reduced use of insecticides in combination with the manipulation of resistant rice varieties would be effective for BPH management.

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