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Bt Cry toxin expression profile in selected Pakistani cotton genotypes

机译:巴基斯坦棉基因型中Bt Cry毒素表达谱

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摘要

Pakistan is ranked fourth among the top five cotton-producing countries in the world. About 70?0% of the cultivated area is under Bt cotton in Pakistan 1 . Bollworm (Helicoverpa armigera) is the major pest of cotton 2 . It causes 31.73? 36.45% yield losses 3,4 and these are reduced by heavy pesticide application. There has been a tremendous increase in the import and use of pesticides. Consequently, about 7.7 billion rupees is spent on pesticides every year 5 . Considering the total pesticide usage (94,265 metric tonnes in 2007?8), 70% is being used exclusively on cotton. In addition to being a pollutant, pesticides are also hazardous to the farmers and livestock 1 . The large amount of money being spent on these chemicals can be avoided by planting Bt cotton
机译:巴基斯坦在世界前五大棉花生产国中排名第四。在巴基斯坦1,大约70%的耕种面积位于Bt棉花下。棉铃虫(Helicoverpa armigera)是棉花的主要害虫2。是31.73吗? 36.45%的产量损失3,4,可通过大量施用农药减少。农药的进口和使用已大大增加。因此,每年在农药上的花费约为77亿卢比5。考虑到农药的总使用量(2007-8年为94265公吨),70%仅用于棉花。除成为一种污染物外,农药还对农民和牲畜造成危害1。通过种植Bt棉花可以避免在这些化学药品上花费大量金钱

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