What agricultural plants are now available in GMO varieties?
Scientists have been using genetic engineering to modify commercial agricultural crop plants since the early 1980s. It was easiest for them to begin with broad-leaved plants such as tobacco and tomato. Narrow leaved crops such as rice and maize were not successfully transformed into GMOs until the late 1980s. By the late 1990s, however, GMO varieties had been developed for nearly every significant crop species. By 1997, more than 60 different crops had been transformed into GMO varieties, and field trials of these GMOs had taken place in 45 different countries. By the end of 1997, 48 different transgenic crop products (involving 12 crops and six different transgenic traits) had been approved in at least one country for commercial use by farmers.
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