吉林农业大学学报2012，Vol.34Issue(1)：19-23,5.DOI:22-1100/S.20111104.0942.001
美国玉米种质改良系的应用潜力研究
Study on Potential Utilization of Improved Maize lines of American Germplasm
摘要
Abstract
In the study, five improved maize inbreds were crossed with five testers which are key inbreds of Lvdahonggu group by NC- Ⅱ mating design. The potential utilization of improved lines was evaluated based on the analysis of heterosis and combining ability of ear traits in 60 000 plants per hectare. The results showed that inbred lines J1218 had higher general combining ability (CCA) on kernel yield per plant ( KYPP), and it crossed four high yield hybridized combinations, and thus it was a successful improved line. The CCA of KYPP of J1405 and J1207 was lower, but they crossed a high yield combination respectively. Thus, the two lines may be of some value in use. The combination pattern of improved inbred x Lvdahonggu group was in accordance with the heterotic pattern of PA x Lvdahonggu group. It could be used to breed maize variety with high yield and dense planting. In breeding, the PA inbred could be used to improve America germplasm.关键词
玉米/美国种质/改良系/应用潜力Key words
maize/American germplasm/improved line/potential utilization分类
农业科技引用本文复制引用
李继竹,胡洋,张焕欣,金晓蕾,吴玥,杨伟光..美国玉米种质改良系的应用潜力研究[J].吉林农业大学学报,2012,34(1):19-23,5.基金项目
转基因生物新品种培育重大专项(2009ZX08003-024B),农业部先进农业科学技术(2009-Z1),吉林省农委农业新品种研发项目(2009年) （2009ZX08003-024B）
