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Ecology and Biology of Cotton Bollworm in Reference to Modeling Bt Resistance Development in a Bt Cotton / Bt Corn System

Nicholas P. Storer, Fred Gould, George G. Kennedy and John W. Van Duyn


 
ABSTRACT

Marketing of cotton and corn expressing Bt toxins in the Cotton Belt is a goal of seed companies. Cotton bollworm infests both crops during several generations and both crop species may express similar types of Bt toxins. Resistance evolution in bollworm to CryIAc toxin in cotton is expected to be affected by the culture of CryIAb corn, and visa versa. A wide area stochastic computer simulation model was developed to examine resistance evolution relationships in a cropping system containing both Bt cotton and Bt corn. This paper presents parameters selected for use in the model and discusses aspects of bollworm resistance evolution to Bt toxins.



Reprinted from Proceedings of the 1999 Beltwide Cotton Conferences pp. 949 - 952
©National Cotton Council, Memphis TN

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Document last modified Monday, Jun 21 1999