The insects are exposed to the toxin proteins in transgenic crops throughout the feeding cycle and season, and as a result, the insect populations are under continuous selection pressure. As the toxins are expressed in all parts of the plant, there is a serious threat of rapid development of resistance in insect pests. Toxin production […]
Resistance in Pests to Transgenics | Pest Management
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Commercialization of Transgenic Crops | Agriculture
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The People’s Republic of China was the first country to commercialize transgenic crops in the early 1990s, with the introduction of a virus resistant tobacco, followed by virus resistant tomato. In 1994, the USA followed when the Calgene Company got the first approval to commercialize a genetically modified tomato ‘Flavr Saver TM’, the delayed ripening […]
Exploitation of Hormones to Control Pest Growth | Agriculture
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The growth and development of insects is regulated through the secretion of internal ductless glands, i.e., hormones. Basically, three types of hormones are involved in insect development. The brain hormone or prothoracicotropic hormone, secreted by the neurosecretory cells of the brain, activates the prothoracic glands to secrete another hormone called moulting hormone (MH) or ecdysone. […]