【摘要】 对黑龙江省１９８２～１９９４年主要推广玉米杂交种种质基础的分析表明，年种植面积在１．５万ｈｍ２以上的杂交种共计５１个，涉及６４个自交系。应用最多的为Ｍ０１７、甸骨１１Ａ、东４６，分别组配了８，８，３个杂交种，面积约占自交系总面积的２６．５％，说明黑龙江省杂交种的种质基础比较狭窄。选系的方式以二环系和改良系为主，外引系和一环系直接组配的杂交种逐渐减少。骨干系按其血缘关系大致可分为美国Ｌａｎｃａｓｔｅｒ血缘（约占２３．４２％）；大黄血缘（约占１０．９９％）；桦甸红骨子血缘（约占１０．６２％）；铁岭黄马牙血缘（约占１０．６５％）；美国Ｍ１４血缘（约占１３．０６％）；冬黄血缘（约占３．１８％）；前苏联血缘（约占７．１２％）等７大基本种质类型。更多还原

【Abstract】 The analysis to the germplasm resource of comercial maize hybrids grown in Heilongjiang Province from 1982 to 1994 indicated that there were 51 hybrids the planting area of which was over 15000 hm 2 , involving 64 inbred lines Among those inbred lines Mo17, diangu llA and Dong 46 were the most popular 8, 8 and 3 hybrids were crossed with them respectively and the planting area of these hybrids amounted to 26 5% of the tatol maize area, seggeting that the genetic base of maize hybrids in Heilongjiang Province was very narrow The pattems of inbred line were mainly second cycle line and improved line and the direct use of first cycle line and forein line was decreasing gradually According to their relationship resource, these inbred lines could be divided into 7 groups: Lancaster of America, (23 42%), Dahuang (10 99%), Huadian Honggrzi (10 62%), Tieling Huangmuya (10 65%), M14 of America (13 06%), Donghuang (3 18%) and Russian descendant (7 1%)更多还原