油葵自交系子实含油率性状配合力的鉴定

通过对油葵不育系、恢复系子实含油率性状进行双列杂交分析 ,结果表明自交系间一般配合力和特殊配合力存在极显著、显著差异。F1 的子实含油率性状受亲本自交系的一般配合力和特殊配合力的共同影响 ,但一般配合力效应较特殊配合力的略大。自交系的一般配合力和特殊配合力间无明显相关关系。在组配高油杂交组合及高含油率自交系的改良计划中 ,应首先在较高的一般配合力的基础上 ,同时要求有较高的特殊配合力方差。母本自交系对杂交种的子实含油率影响较大

Evaluation of Combming Ability of Oil Content Traits of Inbred Lines of Sunflower

Diallel crossing analysis of oil content traits of two groups of inbred lines of sunflower showed that there are significant difference between their general combining ability (GCA) and specific combining ability (SCA).The results showed that the GCA and SCA of parental lines both played an important role in the seed oil content of F 1 hybrids,but the effect of GCA on F 1is greater than that of SCA.There is no obvious relationship between GCA and SCA .It was suggested that when the hybrids with high oil content are developed and the inbred lines are improved, we should pay more attention on GCA of candidates as well as SCA.The CMS plants has greater effects on the seed oil content of F 1 hybrids .