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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 Agricalture Report.
White rice is the worlds most popular form of rice. But it goes through a milling process that removes many nutrients. As a result, people who eat a poor diet based on white rice may not get enough vitamin A. Each year, an estimated 250,000 to 500,000 children go blind from Vitamin A deficiency, the World Health Organization says half of them die within a year of losing their sight. Vitamin A deficiency is a problem especially in Africa and Southeast Asia.
So, scientists thought an answer, they combined white rice with plant compounds that the body can change into Vitamin A, the rices contains Beta-carotene and other carotenoids, these plant colorings give the rice a golden color.
The scientists also thought of a plan to give away this Golden Rice for free to poor farmers. But the rice is genetically engineered, they say it cannot be made using traditional methods to breed plant. The scientists work for 10 years until 1990 to develope the technology to add genes to rice.then it took 9 more years to get the genes they wanted into the seed. The first fild tests took place in 2004 at Louisiana State University in the United States. Golden Rice is currently being tested in the Philippines, it's still not avilable for general use.
Co-inventor Ingo Potrykus says rice  with two added genes will be avilable in 2013. One gene comes from maize, or corn, and the other from a soil bacterium.
Mr. Patrykus is reired from the Swiss Federal Institute of technology, he blames the delays on too many rules about genetically modified crops.
opponents say such crops may cause environmental damage by breeding with conventional plants. Opponents also question the safety of biotech foods.
Mr. Patrykus says Golden Rice has never been shown to be unsafe for the environment or people, many agricultural organizations support the project.
But there are also critics including researchers for the environmental group Green peace. Several month ago they question whether Golden Rice could do much for Vitamin A deficiency. They said releasing genetically modified rice in Asia could permanently change traditional rice varieties and wild ancestors of rice.

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