Technical Efficiency of Cotton Production in Pakistan: A Comparative Study on Non BT and BT-Cotton Farms

The Halo Effect: Suppression of Pink Bollworm on Non-Bt Cotton by Bt Cotton in China

In some previously reported cases, transgenic crops producing insecticidal proteins from Bacillus thuringiensis (Bt) have suppressed insect pests not only in fields planted with such crops, but also regionally on host plants that do not produce Bt toxins. Here we used 16 years of field data to determine if Bt cotton caused this "halo effect" against pink bollworm (Pectinophora gossypiella) in s...

Bt COTTON IN INDIA

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...

Fitness of Bt‐resistant cabbage loopers on Bt cotton plants

Development of resistance to the insecticidal toxins from Bacillus thuringiensis (Bt) in insects is the major threat to the continued success of transgenic Bt crops in agriculture. The fitness of Bt-resistant insects on Bt and non-Bt plants is a key parameter that determines the development of Bt resistance in insect populations. In this study, a comprehensive analysis of the fitness of Bt-resi...

A comparative genetic diversity study among elite Bt and Non-Bt cotton varieties of Andhra Pradesh by RAPD markers

The present work dealt with RAPD markers for genetic diversity comparison estimation in twenty three cotton varieties of Bt and non-Bt cotton cultivars belonging to two cultivated species of cotton in Andhra Pradesh state, India.Variations among twenty three different cotton varieties were analyzed with selected 40 RAPD primers using the polymerase chain reaction (PCR). All the primers produced...