美国加利福尼亚阿尔巴尼植物基因研究中心的科学家,给番茄注入一种抗感基因,从而培育成功一种可以人为地控制番茄成熟期的新品种。普通番茄在授粉后58～60天即会成熟,而具有抗感基因的番茄则挂果时间长达90～120天才会变成橘黄色,而且果肉不会发软,当市场需要提早采摘时,只需对区种番茄喷洒乙烯和丙烯,它便能在喷后15天之内成熟。 Scientists at the Plant Gene Research Center in Albany, California, in the United States injected tomato with a resistance gene to cultivate a successful new species that artificially controls the ripening stage in tomato. Ordinary tomatoes 58 to 60 days after pollination that will mature, and anti-sense gene tomato fruiting time of up to 90 to 120 days will become orange, and the flesh will not be soft, when the market needs early picking, the only It is necessary to spray ethylene and propylene to the regional species tomato and it will be able to mature within 15 days after spraying.