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外源DNA导入是作物育种技术中正在开发的一个新领域。这是一项将有目的性状基因的供体DNA导入受体,选育稳定遗传目的性状植物的分子育种技术。 一、作物育种技术的新领域 在有性杂交育种中,父母本遗传给后代优良性状的稳定需要较长时间。远缘杂交由于性状在后代发生疯狂分离,选育出预期目标的品系,化费的时间更长。外源DNA导入技术为在较短时间内达到定向育种,提供了一条新途径。 1974年周光宇对国内外的远缘杂交工作进行了广泛的调查,提出DNA片段杂交的设想并设计了自花授粉后外源DNA导入植物的技术,即利用
Foreign DNA introduction is a new area under development in crop breeding. This is a molecular breeding technology that introduces the donor DNA of the trait-of-trait gene into the recipient and breeds plants that are stable for genetic purposes. First, the new field of crop breeding technology In sexual crossbreeding, the parental inheritance to the offspring of good traits takes a long time. Distant hybridization due to the tragedy of offspring in the offspring, breeding the desired target line, the cost of longer. Exogenous DNA introduction technology to achieve directional breeding in a short period of time, provides a new way. In 1974, Zhou Guangyu conducted extensive surveys on distant hybridization both at home and abroad, put forward the idea of DNA hybridization and designed the technology of introducing foreign DNA into plants after self-pollination, that is,