十个玉米自交系主要数量性状配合力分析

The Analysis of the Combining Ability of the Main Quantitative Characteristics of Ten Corn Self-Bred Lines

选用 10个性状稳定的玉米自交系 ,按Criffing4模式配制 4 5个杂交组合 ,对其 9个主要数量性状的配合力进行估算和分析。结果表明 :N70、Z2 9、P196的产量一般配合力较高 ,利用它们作亲本较容易测配出高产组合。W 5 5、P96在穗长和行粒数上、N70在穗粗上、B11、P196在穗行数上都具有较高的一般配合力。试验结果的配合力总效应顺序与产量高低基本一致。

Ten corn self-bred lines of stable characteristics were chosen and then 45 hybrid combinations were made up according to Griffing 4 model Then the 9 combining abilities of the main quantitative characteristics were estimated and analysed The results showed that the output of N70,Z29 and P196 possessed higher common combining ability Utilizing the above mentioned self-bred lines to be the parent,the high output combinations could easily be made up For the rice ear length and row grain number,W55 and P96 possessed higher common combining ability and so did N70 for its rice ear thickness,B11 and P196 for their rice ear row number The order of the total effect of the combining ability in the experiment results was fundamentally in accordance with the higher and lower output