【摘要】 选用国内10个基础种质自交系,采用GriffingⅣ双列杂交设计组配45个杂交组合。对穗长、秃尖、穗粗、穗行数、行粒数、百粒重、单穗粒重、出籽率等8个性状进行配合力和遗传参数分析。研究表明:穗粗、穗行数、穗长、行粒数主要由基因的加性效应起作用,穗粒重主要是受非加性基因作用;旅大类群的丹340、丹360,P群的齐319、沈137表现优良,杂交组合的穗粒重特殊配合力较高;不同自交系的一般配合力在同一性状上差异很大,同一自交系的一般配合力在不同性状方面差异也很大。更多还原

【Abstract】 This article analyzed 45 crosses made from 10 maize inbred lines of base germplasm in domestic by Griffing Ⅳ design.It analyzed general combining ability and heredity parameter about 8 characters from ear lengh,bare tip length,ear diameter,rows per ear,kernels per row,100-kemel weight,weight per ear,ear yield rate and so on.This study showed increasing yield from ear diameter,row number per ear,ear lengh,kernel number per row were mainly affected by the gene additive effects and from ear weight were mainly affected by non-additive genetic effects.Dan 340,Dan 360,Qi 319 and Shen 137 from P and lvdahonggu groups were excellent about their characters and ear weight of their crosses was high with special combining ability.General combining ability from different maize inbred lines was quite different in same character.General combining ability from the same maize inbred line was also quite different in different characters.更多还原