摘要
采用NCII设计,在60 000株/hm2密度下,对5个美国Reid群的遗传改良系与塘四平头群的自交系配制的25个玉米杂交组合穗部性状配合力进行了研究,评价了5个美国Reid改良系的改良效果和利用潜力。结果表明:J1129和J1110的单株产量一般配合力高,组配出3个高产组合,增产潜力大;J1018和J1150单株产量的一般配合力较低,各组配出1个高产组合。表明改良系×塘四平头的组配模式与PA×塘四平头群的杂种优势模式相符,在高产密植型杂交种选育中具有较大应用潜力。
Five improved maize inbreds were crosses with five testers representing key inbreds of Tangsipingtou group by NC-Ⅱ mating design.The improvement effects and utilization potential of improved lines were evaluated based on analysis of combining ability in 60 000 plant/ha.The results were that inbred lines J1129 and J1110 had higher general combining ability(GCA) on kernel yield per plant,and they crossed three high yield hybridized combi-nation,and they showed a high yielding potential.The GCA of kernel yield...
出处
《玉米科学》
CAS
CSCD
北大核心
2010年第4期23-26,共4页
Journal of Maize Sciences
基金
吉林省教育厅"十一五"科学技术研究项目(2008069)
吉林省财政厅科研育种项目(2009)
关键词
玉米
美国种质
Reid群
品种改良
Maize
American germplasm
Reid group
Variety improvement
