During the past decade the pesticidal bacterium Bacillus thuringiensis has been the subject
of intensive research. These efforts have yielded considerable data about the complex …

▪ Abstract Bacillus thuringiensis (Bt) is a valuable source of insecticidal proteins for use in
conventional sprayable formulations and in transgenic crops, and it is the most promising …

There were no significant differences in the percent mortality and weight of earthworms
(Lumbricus terrestris) after 40 days in soil planted with Bt (NK4640Bt) or non-Bt corn or after …

Dominance has been assessed in different ways in insecticide resistance studies, based on
three phenotypic traits: the insecticide concentration required to give a particular mortality (D …

Four decades of intensive use of synthetic organic insecticides to control arthropod pests
and disease vectors have led to the selection of insecticide or acaricide resistance in …

Introduction of DDT (dichloro-diphenyl-trichloroethane) and following move towards
indiscriminate use of synthetic chemical insecticides led to the contamination of water and …

ABSTRACT A laboratory strain (GY) of Helicoverpa armigera (Hübner) was established
from surviving larvae collected from transgenic cotton expressing a Bacillus thuringiensis …

Insecticidal proteins produced by various subspecies of Bacillus thuringiensis and bacterial
transforming DNA bind rapidly and tightly on clays, both pure mined clay minerals and soil …

The insecticidal toxin encoded by the cry1Ab gene from Bacillus thuringiensis was released
in root exudates from transgenic Bt corn during 40 days of growth in soil amended to 0, 3, 6 …

The susceptibility of five different field populations of the diamondback moth collected as
larvae within 15 km radius of Ottanchathiram and of the IARI 17-65 laboratory strain to …