六十年代以来,国外某些工农业发达的国家,为提高农作物种子蛋白质含量,在遗传育种和栽培技术方面进行了许多工作,取得了一定的成效。一、在提高水稻蛋白质方面:国际水稻研究所对水稻蛋白质含量问题的研究是在六十年代初开始的。初期由于对影响蛋白质含量的许多因素及其遗传方面缺乏了解,工作只限于化学部门。直到一九六七年才进行专门的杂交育种工作。从一九六○年开始对从世界各地征集来的水稻品种进行蛋白质含量的筛选,以便鉴定出遗传上高蛋白质的品种用于育种工作。系谱中品系的蛋白质含量,是在系谱行内选取3～6个单株,每株随机取10粒发育完全的糙米进行分析测定的。在产 Since the 1960s, some countries with developed industry and agriculture have done a lot of work in genetic breeding and cultivation techniques to improve the protein content of crop seeds and have achieved some success. First, in improving rice protein: The International Rice Research Institute of rice protein content in the study started in the early sixties. Initially limited to the chemical sector due to the lack of understanding of many of the factors that affect the protein content and their genetic aspects. It was not until 1967 that specialized cross breeding was carried out. Since 1960, rice varieties from all over the world have been screened for protein content in order to identify genetically high-protein varieties for breeding. The pedigree protein content in the pedigree was determined by selecting 3 to 6 plants in the pedigree line and randomly selecting 10 randomly selected brown rice per plant for analysis and determination. In production