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[report整理] SENEWS-2011-03-01

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[Homework]SENEWS-2011-03-01

This is the VOA Special English Agricultual report. White rice is the world's most popular form of rice.But it goes through a milling process that removes many netrients. As a result, people who eat a poor diet based on white rice may not get enough vitamin A. Each year an estimated two hundred fifty thousand to half a million children go blind from vitamin A deficiency. The World health organization says half of them die within a year of losing their sight.Vitamin deficency is a problem especially in Africa and Southeast Asia.So scientists thought of an answer.They combined white rice with plant compounds that the body can change into the vitamin A. The rice contains β (beta) carotene and other carotenoids. These plant colorings give the rice a golden color.The scientists also thought of plan to give away this golden rices for free to poor farmers. But the rice is genetically engineered they say it can not be made useing traditional methods to breed plants. The scientists worked for ten years until 1990 to develop the technology to add genes to rice.Then it took 9 more years to get the genes they wanted into the seed. The first field tests took place in 2004 at the Louisiana State University in the United states. Golden rice is the corrently being tested in the Philipines. It is still not avaluable for geeral use. Co-inventor Ingo Potrykus says rice with two added genes will be avaluable in 2013. One gene comes from maize or corn and the other form soil bacteria.Mr Putrykus is retired from the Swiss Federal Insititute of Thechnology.He blames the delays on too many rules about genetically modified crops.

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