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自从麦茨(Mertz,1964)等人发现奥帕克-2(Opaque-2)基因可使玉米籽粒赖氨酸含量增加1倍以来,以蛋白质品质改良为目标的玉米育种工作取得了显著的进展,一些高赖氨酸玉米杂交种已在部分国家大量生产使用。研究表明,这种玉米的营养价值,无论是作为食品还是作为养猪或养禽饲料,都大大高于普通玉米。因此,积极推广高赖氨酸玉米的种植和利用,对于改善人们的营养状况、促进畜牧业的发展,都有着十分重要的意义。但是,玉米的奥帕克-2基因对籽粒性状还产生一些不利影响,主要是
Since the discovery by Mertz (1964) et al. That Opaque-2 gene can double the lysine content of maize grain, significant progress has been made in breeding of maize aimed at protein quality improvement, Some high-lysine corn hybrids have been mass-produced in some countries. Research shows that the nutritional value of this corn, whether as food or as a pig or poultry feed, are much higher than ordinary corn. Therefore, actively promoting the cultivation and utilization of high-lysine corn is of great significance for improving people’s nutritional status and promoting the development of animal husbandry. However, the Opaque-2 gene of maize also had some adverse effects on grain traits, mainly