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Mahesh, H. M.
- Cry Toxin Expression in Bt-Cotton Hybrid Seeds:Impact on ‘refuge-in-Bag’ Strategy for Managing Resistance in Bollworms
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Authors
Affiliations
1 Department of Entomology, College of Agriculture, University of Agricultural Sciences, GKVK Campus, Bengaluru 560 065, IN
1 Department of Entomology, College of Agriculture, University of Agricultural Sciences, GKVK Campus, Bengaluru 560 065, IN
Source
Current Science, Vol 118, No 10 (2020), Pagination: 1494-1495Abstract
A key strategy for delaying the deve-lopment of resistance among cotton bollworms to the Bt toxins is ‘refugia’. This refers to the cultivation of a small proportion of non-Bt-cotton alongside Bt-cotton, in order to maintain a consi-derable population of bollworm adults that are not selected for by the Bt toxins1–3 . The unselected population of bollworm adults, by means of mating with, if any, a small number of selected individuals, is expected to reduce the rate of resistance development4,5 . Thus, with the purpose of implementing the refugia strategy, farmers purchasing Bt-cotton seeds have been provided with a prescribed quantity of non-Bt seeds for simultaneous planting. However, Indian cotton farmers, most of whom are small or marginal, have barely taken the risk of planting non-Bt seeds, thus leading to gross non-compliance of the pre-scribed refuge requirement. This non-compliance has been attributed to the development of resistance recorded among the bollworms against the Bt toxins 6–8 .Full Text
References
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Abstract Views :240 |
PDF Views:77
Authors
Affiliations
1 Department of Entomology, University of Agricultural Sciences, GKVK Campus, Bengaluru 560 065, IN
1 Department of Entomology, University of Agricultural Sciences, GKVK Campus, Bengaluru 560 065, IN
Source
Current Science, Vol 120, No 5 (2021), Pagination: 751-751Abstract
No Abstract.Full Text
References
- Muralimohan, K. and Mahesh, H. M., Curr. Sci., 2020, 118(10), 1494–1495.
- Brévault, T., Tabashnik, B. E. and Carrière, Y., Sci. Rep., 2015; doi:10.1038/ srep09807.