BILL BARKSDALE / AGSTOCKUSA / SCIENCE PHOTO LIBRARY BILL BARKSDALE / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Herbicide resistant cotton plants. Cotton plants outgrowing a Morning glory weed (Ipomoea sp.) that has been damaged by the herbicide Roundup. These cotton plants are unaffected by Roundup as they are a genetically modified (GM) 'Roundup Ready' variety (Gossypium hirsutum). They have had a gene introduced by genetic engineering that allows resistance to this herbicide. A crop of 'Roundup Ready' cotton can therefore be sprayed with the herbicide to kill weeds, but without damaging the cotton plants. This theoretically increases cotton yields, but there is concern over the safety of GM technology. Photographed in Mississippi, USA.
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