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三十年前在加拿大田野中发现的自然生长的一种桔色菜花使科学家为提高许多作物种类的营养价值提供了重要线索。美国农业研究局植物分子生物学家DavidF·Garvin说，我们最新的化学分析表明，在这种突变体的某些组织中＊一胡萝卜素的含量实际上比普通菜花高数百倍。一个普通菜花
The natural orange cauliflower found thirty years ago in Canadian fields provided scientists with important clues to improving the nutritional value of many crop species. According to David F Garvin, plant molecular biologist at the Bureau of Agricultural Research, our latest chemical analysis shows that the carotenoid content of some tissues of this mutant is actually several hundred times higher than that of normal cauliflower. A normal cauliflower