引进南斯拉夫玉米自交系的类群划分与利用  

Classification of the heterotic groups in introduced Yugoslav maize inbreds and their utilization

作　　者：李玉玲[1] 陶华[1] 陈绍江[2] 

机构地区：[1]河南农业大学农学院,郑州450002 [2]中国农业大学国家玉米改良中心,北京100094

出　　处：《中国农业大学学报》2003年第1期19-24,共6页Journal of China Agricultural University

基　　金：河南省科技攻关资助项目 (9910 10 2 31)

摘　　要：用 7个国内不同类群自交系测定了 9个南斯拉夫玉米自交系的GCA和SCA ,分析了被测系的种质特点、在育种上的利用价值和途径以及测验种在生产上的商用价值。结果表明 :被测系可分为 5类 ,所代表的种质基础较广泛 ;980 9单株产量的GCA最高 ,980 9×S2 2 的SCA 2年都达到显著水平 ,980 9在育种上有较大的直接组配利用价值 ;980 9×S2 2 单株产量居首位 ,较对照分别增产 4 1.5 6 %和 2 4 .2 6 % ,具有较高的生产利用价值 ;其余自交系只能间接用于低优势群自交系的创新改良。本文还对各自交系适宜进一步广泛测配及重组改良的自交系类群进行了较详细的分析。The GCA and SCA of 9 introduced Yugoslavia maize inbreds were tested through their 63 crosses with 7 Chinese lines from different heterotic groups. The germplasm characteristics, value in breeding, utilization methods and the commercial value of the testcrosses were analyzed. The results were as fellows: 9 tested lines were divided into 5 heterotic groups and they represented wide germplasm. The GCA of 9809 was the highest and the SCA of 9809 was higher than the ck hybrid significantly in plant yield in two years and 9809 had great value in cross-making. The single plant yield of 9809×S 22 was the highest in all the crosses and was higher than the ck hybrid by 41.56% and 24.26% in two years, and it had great utilization value in production. However, the rest 8 lines could only be used in the improvement of their low heterotic indirectly.

关 键 词：南斯拉夫玉米 自交系 类群 划分 利用 配合力 

分 类 号：S513[农业科学—作物学]