在加拿大田野中发现一种自然生长的橘红色菜花 ,美国农业研究局植物分子生物学家ＤａｖｉｄＦ·Ｇａｒｒｉｎ说 ,化学分析表明 ,在这种突变体的某些组织中 β-胡萝卜素的含量实际上比普通菜花高数百倍。这种突变菜花生产的很多 β-胡萝卜素足以使白色变成橘红色。β-胡萝卜素和 A naturally occurring cauliflower cauliflower was found in Canadian fields, said plant biologist David F. Garrin of the Bureau of Agricultural Research, who said chemical analysis showed that the content of beta-carotene was actually higher in some tissues of this mutant than Common cauliflower hundreds of times. Many of the beta-carotene produced by this mutant cauliflower is enough to turn white to orange-red. β-carotene and