九个豫育玉米自交系配合力分析及评价

采用Griffing Ⅳ设计,对河南省近年育成的9个玉米自交系的单株产量等13个性状的配合力进行了分析.结果表明:除了出籽率GCA、SCA及穗粗和粒厚的SCA外,其它各性状配合力在9个自交系间存在显著或极显著差异.以单株产量自交系配合力总效应为主要指标,结合其它性状配合力相对效应大小对9个自交系在玉米育种中的利用潜力进行了分析比较.结果表明:自交系昌7-2的利用潜力最高,其次为洛06、济533、郑22、豫8701、中72、868,而洛1544、郑58的利用潜力较低。

Analysis and Evaluation on the Combining Ability of the Nine Corn Inbred Lines

Using Griffing IV design,9 maize inbred lines were studied in 2001 for their combining ability of the 13 quantitative characters.The results showed that there were significant different in the GCA and SCA of every character of the nine inbred lines except the combining ability of kernel rate and SCA of ear diameter and kernel thickness.We compared the applied potency of the nine inbred lines.The results showed that the sequence of applied potency was Chang7-2>Luo06>Ji533>zheng22>Yu8701>zhong72>868>Luo1544>zheng58.