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将20个加拿大早熟玉米群体与4个我国主要种质类群的代表自交系按照NCⅡ设计组配80个测交组合,2006、2007年进行田间鉴定试验,研究引进群体与我国主要种质类群的杂种优势关系。结果表明,EP1、EP9、EP14、EP15、EP16和EP17群体单株产量等综合性状一般配合力效应表现较好;EP1、EP8和EP19群体属于塘四平头群,EP12、EP14、EP15和EP22属于Reid群,EP17、EP20、EP21和EP23属于Lancaster群,EP3、EP6、EP7、EP9、EP10、EP11、EP13、EP16和EP18属于旅大红骨群;加拿大早熟玉米群体与旅大红骨类群的杂种优势最强。
The representative inbred lines of 20 Canadian precocious corn populations and 4 major germplasm groups in China were tested with 80 test combinations according to NCⅡ design group and field trials were conducted in 2006 and 2007 to study the effects of introduced groups and major germplasm groups in China Heterosis relationship. The results showed that the general combining ability effect of comprehensive traits such as single plant yield of EP1, EP9, EP14, EP15, EP16 and EP17 groups performed well; EP1, EP8 and EP19 populations belonged to Tongsipingtou group, EP12, EP14, EP15 and EP22 belonged to Reid EP17, EP20, EP21 and EP23 belong to the Lancaster group, EP3, EP6, EP7, EP9, EP10, EP11, EP13, EP16 and EP18 belong to the Luda red bone group; Canadian premature corn group and Luda red bone group heterosis .