AGRICULTURE REPORT - Study Says Genetically Engineered Rice
AGRICULTURE REPORT - Study Says Genetically 3 Engineered Rice Cuts Use of Insecticides
By Mario Ritter
Broadcast: Tuesday, May 10, 2005
I'm Gwen Outen with the VOA Special English Agriculture Report.
A study in China suggests that two kinds of genetically engineered rice can reduce the costs, and dangers, of poison chemicals.
One kind of rice includes a gene 1 found in the bacterium 4 known as Bt. Bt lives in soil and on plants; it is a natural insecticide. It is poisonous to some kinds of insects. Bt maize 5 is commonly planted in the United States. The other kind of rice was engineered to resist insects with a gene from the cowpea plant.
The two-year study involved tests of Bt rice in Hubei province and cowpea rice in Fujian. Scientists collected information from small farms already testing insect-resistant rice without technical aid. Some farmers are growing both insect-resistant and traditional rice.
The scientists found that the Bt rice produced six to nine percent more grain than other kinds of rice. The cowpea rice, based on fewer observations, did not appear to increase productivity 6.
Still, the findings show that resistance to insects improved for both kinds of rice. The study says farmers used eighty percent less insecticide than usual.
Science magazine published the findings. Jikun Huang led the study. He is director of the Center for Chinese Agricultural Policy, in the Chinese Academy of Sciences.
The study notes that no country has yet released a major food grain crop that has been genetically changed. Engineered crops are now used mostly for animal feed and products like cotton.
The Chinese farmers in the study made their own decisions about when to use insecticides. Those with traditional rice crops used chemicals almost four times per growing season on average. But farmers with the insect-resistant rice used insecticides an average of less than once per season.
Less insecticide meant fewer sick farmers. The study says the farmers growing insect-resistant rice did not report any health problems from the use of poisons.
China has not approved genetically engineered rice for market. But a report from Hubei last month said insect-resistant rice appears to have been sold illegally for the last two years. That report came from the environmental group Greenpeace, which oppose genetic 2 engineering. China says it is investigating the Greenpeace report.
Some countries will not import genetically engineered foods. Not everyone is sure that such products are safe for people or the environment.
This VOA Special English Agriculture Report was written by Mario Ritter. I'm Gwen Outen.
- A single gene may have many effects.单一基因可能具有很多种效应。
- The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
- It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
- Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
- All the bees in the colony are genetically related. 同一群体的蜜蜂都有亲缘关系。
- Genetically modified foods have already arrived on American dinner tables. 经基因改造加工过的食物已端上了美国人的餐桌。 来自英汉非文学 - 生命科学 - 基因与食物
- The bacterium possibly goes in the human body by the mouth.细菌可能通过口进入人体。
- A bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源。
- There's a field planted with maize behind the house.房子后面有一块玉米地。
- We can grow sorghum or maize on this plot.这块地可以种高粱或玉米。
- Farmers are introducing in novations which increase the productivity.农民们正引进提高生产力的新方法。
- The workers try to put up productivity.工人设法提高生产率。