英科学家研究转基因作物异体授粉中风的作用

• http://www.aweb.com.cn 2007年06月28日08:43 英国埃克塞特大学网站

　　英国埃克塞特大学网站2007年6月消息，该大学一个生物科学研究小组推荐了一种预测转基因作物和常规作物间异体授粉可能性的新方法，该方法将风速和方向考虑在内来预测花粉在空气中的运动情况。研究显示，转基因和非转基因玉米、油菜、水稻、甜菜的异体授粉量有很大差别。该预测模型可以用于设计转基因和非转基因作物的最小种植距离以使异体授粉量达到最小。

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　　EXETER SCIENTISTS EXAMINE ROLE OF WIND IN GM CROSS-POLLINATION

　　A research team from the School of Biosciences, University of Exeter, has recommended a new method for predicting the potential of cross-pollination between genetically modified (GM) and conventional crops. The method takes into account wind speed and direction to predict the movement of pollen in the air. Their study shows huge variation in the amount of cross-pollination between GM and non-GM crops of maize, oilseed rape, rice and sugar beet. Levels vary according to whether the GM field is upwind or downwind of the non-GM field given the direction of the prevailing wind over the flowering period of the crop. This model of pollen dispersal in the wind can be used to devise minimum distances between GM and conventional crop that minimize cross-pollination.