辐射诱变育种,就某种意义来讲,往往能超过常规育种的变异范围,并具有较早稳定的特点,是作物育种不可忽视的一种手段。1961年以来,我所利用Co~(60)—γ射线照射大豆种子,获得一些有益的突变类型。1971年用Co~(60)—γ射线10000伦琴照射“黑河三号”大豆风干种,1972年用15000伦琴重复照射,选出比原来品种早熟16天的优良 Radiation mutation breeding, in a sense, is often beyond the scope of conventional breeding variation, and has the characteristics of earlier stability, crop breeding can not be ignored as a means. Since 1961, I have used Co ~ (60) -γ rays to irradiate soybean seeds, and obtained some beneficial mutation types. 1971 Co ~ (60) -γ ray 10000 Roentgen irradiation “Heihe No. 3” soybeans dry in 1972 with 15000 Roentgen repeated irradiation, selected earlier than the original varieties of good 16 days