International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 1
First page : (1296) Last page : (1302)
Article doi: http://dx.doi.org/10.18782/2320-7051.6227

Resistance Development in Pink Bollworm Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) to Bt Cotton and Resistance Management Strategies

Sree Latha Edpuganti*
National Institute of Plant Health Management, Rajendra Nagar, Hyderabad – 500 030
*Corresponding Author E-mail: sreelatha437@gmail.com
Received: 25.01.2018  |  Revised: 20.02.2018   |  Accepted: 24.02.2018  

 ABSTRACT

Transgenic cotton producing Bacillus thuringiensis (Bt) toxins kill Lepidopteran pests and thus; can reduce reliance on insecticides to control boll worms. Through, biotechnology the naturally occurring Bt proteins are used to develop genetically modified (GM) insect-protected crops that help farmers to protect against insect damage and destruction. GM crops were first commercialized in the US, Canada, Mexico, Argentina, China, and Australia in 1996. In India Bollgard I released in 2002 and Bollgard II in 2006 in cotton crop.  India, the world's biggest cotton producer, has the fifth largest area under GM crop cultivation; cotton had been sown on 111.55 lakh hectares during 2017-18. Huge area under Bt crop increased the chances of rapid evolution of resistance to Bt toxins by boll worms. When Bt cotton was released, initially it was extremely effective at killing lepidopteran pests, but inherently these pests have potential to develop resistance under intense selection pressure.

Key words: Pink bollworm, Resistance, refuge, Bt cotton, Gene pyramiding

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Edpuganti, S.L., Resistance Development in Pink Bollworm Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) to Bt Cotton and Resistance Management Strategies, Int. J. Pure App. Biosci.6(1): 1296-1302 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6227