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五、转基因技术改良植物品质 1988年,美国科学家借助基因工程首次培育成功耐贮藏的番茄,为植物品质改良找到了一条新路。番茄变软是因为番茄果实在成熟时即开始合成多聚半乳糖醛酸酶(称PG酶),由于PG酶能分解细胞壁的有效成份,从而导致番茄变软。变软的番茄给运输和贮藏造成极大的不便,给番茄生产造成
Fifth, transgenic technology to improve plant quality In 1988, the United States scientists with genetic engineering for the first time to cultivate successful resistant storage of tomatoes, plant quality improvement found a new road. Tomato softens because tomato fruit begins to synthesize polygalacturonase (PG enzyme) when it matures. As PG enzyme can decompose the active ingredients of the cell wall, it causes the tomato to soften. Softened tomatoes cause great inconvenience to shipping and storage, resulting in tomato production