以90 年代初期辽宁省应用的6 个主要测验种与自选的8 个稳定自交系进行不完全双列杂交,对主要数量遗传性状及遗传参数进行了比较与分析。结果表明:小区产量的GCA 效应值大小依次为7922、丹340 、E28、Mo17 、5005 。单穗粒重与小区产量之间表现极显著正相关,穗行数、穗粗二性状与小区产量亦呈正相关,并且穗行数与小区产量间相关性达极显著水平。丹340 的穗行数、单穗粒重和穗粗3 个性状的GCA相对效应值表现十分突出。分别为17 .7 、11 .28 和11 .6 。穗粒重、穗行数和穗粗表现为加性基因效应。穗粗和穗行数受环境影响较小,可在早代选择。 In this study, incomplete diallel cross was conducted with 6 main test varieties and 8 self-selected stable inbred lines in Liaoning Province in the early 90’s. The main quantitative genetic traits and genetic parameters were compared and analyzed. The results showed that the GCA effect of community yield was 7922, Dan 340, E28, Mo17 and 5005, respectively. There was a significant positive correlation between the grain weight per panicle and the yield of the plot. The correlation between the number of ear rows and the panicles per panicle and the yield of the plot was also positively correlated. The correlation between the number of ear rows and the yield of the plot was extremely significant. The results of GCA relative effect of Dan 340 on the number of ear rows, grain weight per panicle and panicles were very prominent. Respectively 17.7, 11.28 and 11.6. The grain weight per ear, the number of ear rows and the ear diameter were additive gene effects. Spike coarse and ear rows affected by the environment less, can be selected in the early.