Impacts of Transgenic Insect-resistant Cotton on the Development and Reproduction of Cotton Aphid

doi:10.7668/hbnxb.2008.02.037

Abstract

Abstract: The short-run impacts of transgenic insectresistant cotton cvs.GK12 and SGK321 and long-term impacts of GK12 on cotton aphids Aphis gossypii Glover were evaluated by laboratory experiments.Laboratory cotton aphid population kept on non-transgenic cotton cv.Simian 3 for ten generations was used for the experiments,and the isogenic non-transformed varieties of GK12 and SGK321 were used as their relative controls.The results indicated that GK12 and SGK321 had no impacts on the development,reproduction and parameters of life tables of cotton aphids in the short run.When fed on transgenic cotton cv GK12 or SGK321 for one generation,the development period of each instars larvae,adult longevity,number of offsprings,reproduction period,intrinsic rate of increase,net reproductive rate,average development period of cotton aphids did not differ significantly to those of cotton aphids fed on their relative isogenic cotton.GK12 showed no impacts on the development and fecundity of cotton aphids,even the cotton aphids were fed with GK12 for 37 generations.So it was concluded that there were no impacts of transgenic insect-resistant cotton GK12 and SGK321 on the development and reproduction of cotton aphid both in the short run,and GK12 had no impacts on cotton aphid in the long term.

Key words: Transgenic insect-resistant cotton, Non-target pests, Cotton aphid Aphids gassypii Qover, Develop-ment, Reproduction

CLC Number:

Q785

ZHANG Ju-hong, GUO Jian-ying, WAN Fang-hao, XIA Jing-yuan. Impacts of Transgenic Insect-resistant Cotton on the Development and Reproduction of Cotton Aphid[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(2): 163-168. doi: 10.7668/hbnxb.2008.02.037.

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http://www.hbnxb.net/EN/Y2008/V23/I2/163

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