Comparison of Insect Control on Two Cultivars of Bt Transgenic and Non-Transgenic Cotton
نویسندگان
چکیده
منابع مشابه
Hybridizing transgenic Bt cotton with non-Bt cotton counters resistance in pink bollworm.
Extensive cultivation of crops genetically engineered to produce insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) has suppressed some major pests, reduced insecticide sprays, enhanced pest control by natural enemies, and increased grower profits. However, these benefits are being eroded by evolution of resistance in pests. We report a strategy for combating resistance by cro...
متن کاملEFFECT OF Bt-TRANSGENIC COTTON ON SOIL BIOLOGICAL HEALTH
Bt cotton are plants that have been genetically modified to express the insecticidal proteins Cry 1 Ac from subspecies of the bacterium, Bacillus thuringiensis israelensis (Bt), to control bollworm pest that feed on cotton. There is a persistent environmental concern that transgenic Bt-crops carry genes that have indirect undesirable effect to natural and agro– ecosystem function. We investigat...
متن کاملImpacts of Bt transgenic cotton on integrated pest management.
Transgenic cotton that produced one or more insecticidal proteins of Bacillus thuringiensis (Bt) was planted on over 15 million hectares in 11 countries in 2009 and has contributed to a reduction of over 140 million kilograms of insecticide active ingredient between 1996 and 2008. As a highly selective form of host plant resistance, Bt cotton effectively controls a number of key lepidopteran pe...
متن کاملBiosafety assessment of transgenic Bt cotton on model animals
Methods: For this purpose, animals like rat and soil organisms like Earthworm were selected. Rats were selected on the basis of its 95% homology on genomic, cellular and enzymatic level with human while earthworm were preferred on the basis of their direct contact with soil to evaluate the impact of Bt (Cry1AC) crop field soil on earthworm, secreted by root exudates of Bt cotton. Several physic...
متن کاملThe Effects of Fe2O3 Nanoparticles on Physiology and Insecticide Activity in Non-Transgenic and Bt-Transgenic Cotton
As the demands for nanotechnology and nanoparticle (NP) applications in agriculture increase, the ecological risk has drawn more attention because of the unpredictable results of interactions between NPs and transgenic crops. In this study, we investigated the effects of various concentrations of Fe2O3 NPs on Bt-transgenic cotton in comparison with conventional cotton for 10 days. Each treatmen...
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ژورنال
عنوان ژورنال: Arthropod Management Tests
سال: 1997
ISSN: 2155-9856
DOI: 10.1093/amt/22.1.267a