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把人们所需要的外源基因(如高产、抗病虫害优质基因)定向导入作物细胞中,使其在新的作物中稳定遗传和表现,产生转基因作物新品种,是大幅度提高作物产量的一项新技术。它给农业生产带来了希望和奇特的景观。 科学家们创造的第一种转基因作物始于12年前,目前已有数十种转基因作物相继问世。外源基因导入作物的方法,一般有以下几种:一、滴注引进,即将外源DNA滴进或微量注射入受体,二、离体培养,即在花粉、种胚等诱导、分化培养基中加入外源DNA;三、射击穿入,即利用基因枪、电击法等将外源DNA直接导入受体;四、
Targeted introduction of exogenous genes (such as high-yielding, pest-resistant genes) into crop cells for stable inheritance and performance in new crops and generation of new varieties of genetically modified crops is a significant increase in crop yield new technology. It brings hope and peculiar landscapes to agricultural production. The first GM crop created by scientists began 12 years ago, and dozens of GM crops have come out. Introduction of foreign genes into crops, there are generally the following: First, the introduction of infusion, the introduction of exogenous DNA into the micro-injection into the recipient, Second, in vitro culture, that is, pollen, embryo and other induction, differentiation and culture Base by adding exogenous DNA; Third, the penetration of the shot, that is, the use of gene gun, electric shock method will be directly introduced into the recipient of exogenous DNA; Fourth,