1975年,我们开始进行高光效育种试验,两年多来,共进行同室效应筛选30余期,筛选水稻50多个品种(系),计70余万苗,并试筛了油菜、小麦等作物。从这些群体中初选水稻绿苗78株。其中进行了第二次筛选的有3个品种(系),辐射二代筛选的有10个品种,辐射一代筛选的有12个品种,雄性不育杂种一代筛选了2个晶系,二代筛选了1个晶系,常规育种杂交后代筛选了10余个品系,C_3×C_4的高代筛选了2个品种,已定型的常规品种20余个,入选绿苗作亲本材料进行人工杂交的有15个组合。具体情况分述如下: In 1975, we started to test the high light efficiency breeding. Over the past two years, we conducted more than 30 screening tests of the same room effect, screened over 50 rice varieties (lines), counted more than 700,000 seedlings, and screened crops such as rapeseed and wheat . 78 primary rice seedlings were selected from these groups. There were 3 varieties (lines) for the second screening, 10 varieties for the second generation screening, 12 varieties for the first generation screening, 2 lines for the second generation screening A crystal system was established. More than 10 lines were screened by conventional breeding crossbreeds. Two high-generation C_3 × C_4 cultivars were screened, more than 20 conventional varieties were screened, and 15 were selected for artificial hybridization. A combination. The specific situation is as follows: