转基因植物及安全性评价.ppt

转基因植物及安全性评价
一 植物转基因技术
将优良性状的目的基因导入植物细胞或组织，并在其中进行表达，从而使植物获得新的性状。
转基因方法介绍
原生质体为受体的直接转化法（简称 its of interest in tomatoes. Source: USDA
Canola is a major oilseed crop. Transgenic research has focused on improving the nutritional quality of canola oil by enhancing the Vitamin E content or by modifying the balance of fatty acids.
Nicotine-free tobacco is now being grown for a projected introduction of nicotine-free cigarettes
Decaffeinated coffee is now made by treating coffee beans to remove the caffeine. Other methods are criticized for removing some of the desirable, flavor-producing components along with the undesirable caffeine.
Papaya is a tropical fruit rich in Vitamins A and C, but susceptible to a number of serious pests and diseases. The transgenic variety UH Rainbow, resistant to the papaya ringspot virus, is currently in production in Hawaii.
Improved Turfgrass for Lawns and Recreational Areas There are a number of environmental concerns associated with the current use of turfgrass. These include the amount of chemicals applied (fertilizers, herbicides, fungicides, and even green dyes); the large quantity of water required to keep lawns healthy, especially in the West; the energy required to mow lawns
Food crops engineered to produce edible vaccines against infectious diseases would make vaccination more readily available to children around the world.
White mold (Sclerotinia) is a serious problem for sunflower producers in some areas. Resistance to this disease would expand the area in which sunflowers can be grown and might improve yields in areas of current cultivation. A commercially available cultivar is not expected before 2019.
转基因技术的发展——全球
农业生物技术应用国际服务组织（ISAAA）执行纲要简报
2019-2019年， 亿公顷，，10 年间累计的全球市场价值约为293 亿美元。
农业生物技术应用国际服务组织（ISAAA）执行纲要简报
2019-2019年，种植转基因作物的国家由6个增加到21个。2019-2019年增加了四个国家即葡萄牙、法国、捷克共和国和伊朗。
转基因技术的发展——全球
转基因植物种植面积增长速度
转基因技术的发展——中国
2019年，种植面积突破210万公顷，成