摘要
采用NCII设计 ,以Mo17、B73、黄早四、丹 340、K12、K2 2为测验种 ,12个自交系为被测系 ,通过两年、两点完全区组试验设计 ,分析了 18个玉米自交系的配合力和杂种优势群。结果表明 ,18个自交系可分为 5群 ,即兰卡斯特 (Mo17和P138)、瑞得 (B73、8112、铁 792 2和掖 10 7)、四平头 (黄早四、K12和 5 15 )、旅大红骨 (丹 340、E2 8、自 330、S37和 8 93)和PA群 (K2 2、CA15 6、掖 4 78和沈 5 0 0 3)。在 72个杂交组合中 ,K12× 8 93、B73×S37、B73× 8 93、K2 2×S37、Mo17× 8 93、Mo17×S37、丹 340×铁 792 2、丹 340×P138、丹 340×S37为 9个强优势组合。K12、S37、8 93和丹340的产量一般配合力高 ,参与组配的强优势组合较多。因此 ,这 4个自交系及其衍生系在我国玉米育种和生产中会有较大的应用潜力。
The combining ability and heterotic groups of 18 maize inbred lines used predominantly in China were analyzed based on the data from 2 year and 2 location experiments. Design II and testers of Mo17, B73, Huangzao4, Dan340, K12, K22 were adopted. The results indicated that 18 inbred lines were classified into 5 heterotic groups, i.e. Lancaster (Mo17 and P138), Reid (B73, 8112, Tie7922 and Ye107), Sipingtou (Huangzao4, K12 and 515), Lüda Red Cob ( Dan340, E28, Zi330 and 8 93) and PA group (K22, CA156, Ye478 and Shen5003). The combinations of K12×8 93, B73×S37, B73×8 93, K22×S37, Mo17×8 93, Mo17×S37, Dan340×Tie7922, Dan340×P138 and Dan340×S37 performed best among 72 entries. Inbred lines K12, S37, 8 93 and Dan340 were good combiners and are involved to produce high yielding hybrids. They will be the predominant lines in maize breeding and commercial production in China.
出处
《中国农业科学》
CAS
CSCD
北大核心
2002年第6期600-605,共6页
Scientia Agricultura Sinica
基金
亚洲开发银行AMBIONET中国项目资助