Genetically modified crops (GM crops, or biotech crops) are plants, the DNA of which has been modified using genetic engineering techniques, which are then used in agriculture. Plants are also transgenically modified in scientific research; see genetically modified organism for discussion.
Genetic engineering techniques are much more precise than mutagenesis (mutation breeding) where an organism is exposed to radiation or chemicals to create a non-specific but stable change. Other techniques by which humans modify food organisms include selective breeding; plant breeding, and animal breeding, and somaclonal variation.
In most cases the aim is to introduce a new trait to the plant which does not occur naturally in this species. Examples include resistance to certain pests, diseases or environmental conditions, or the production of a certain nutrient or pharmaceutical agent.
Critics have objected to GM crops per se on several grounds, including ecological concerns, and economic concerns raised by the fact these organisms are subject to intellectual property law. GM crops also are involved in controversies over GM food with respect to whether food produced from GM crops is safe and whether GM crops are needed to address the world's food needs. See the genetically modified food controversies article for discussion of issues about GM crops and GM food.
This article covers GM crops and their use in agriculture. There are separate articles on other aspects of genetic engineering. The genetic engineering article focuses on history and methods of genetic engineering, and on applications of genetic engineering and of GMOs. The article on GMOs focuses on what organisms have been genetically engineered and for what purposes. The two articles cover much of the same ground but with different organizations (sorted by application in the genetic engineering article; sorted by organism in the GMO article). There are separate articles on genetically modified food itself, regulation, and controversies.
Read more about Genetically Modified Crops: Gene Flow in Plants, History, Methods, Business of GM Crops, Uses, Actual and Proposed, Extent of Worldwide Use of GM Crops, Examples of Genetically Modified Crops, Regulation, Controversy
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