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按 (P1×P2 )不完全双列杂交设计 ,分析了 1 6个玉米自交系的株高、穗位、穗长、穗粗、行数、行粒数、百粒重、单穗重 8个性状的一般配合力和特殊配合力。结果表明 :株高、穗位、穗行数、单穗重主要受加性基因控制 ,而穗长、行粒数、百粒重主要受非加性基因控制。株高、穗位、行数、百粒重、单穗重应注重早代选择 ;穗长、行粒数应注重晚代选择
According to the incomplete diallel cross (P1 × P2) design, the relationships among the plant height, ear position, ear length, ear diameter, number of rows, line number, 100-grain weight, The general combining ability and special combining ability of each trait. The results showed that plant height, ear position, number of ear rows and single ear weight were mainly controlled by additive genes, while spike length, number of lines per ear and weight of 100 seeds were mainly controlled by non-additive genes. Plant height, ear position, number of rows, 100-grain weight, single ear weight should pay attention to early generation selection; spike length, line grain should focus on the choice of the late generation