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出 处:《中国农学通报》2008年第11期224-227,共4页Chinese Agricultural Science Bulletin
基 金:辽宁省博士启动基金"甜糯玉米的遗传改良与利用"(20051084)。
摘 要:作者拟分析Ga糯玉米自交系主要农艺性状的配合力效应,并进行评价。利用不完全双列杂交NCⅡ设计,以3个经遗传改良的Ga糯玉米自交系为父本,与8个糯玉米自交系进行杂交。对24个杂交组合进行农艺性状鉴定。结果表明,父、母本各性状的一般配合力和特殊配合力效应均达极显著差异。Ga糯玉米自交系具有良好的配合力,其中,CM327的一般配合力效应比较高,其组配的杂交种在产量、穗长、行粒数等性状上具有明显优势,具有很好的杂优利用潜力。Ga糯玉米自交系的选育利用,有助于糯玉米种质的扩增与杂种优势的利用。The combining ability of main agronomic characters in Ga waxy inbred hnes were analyzed and evaluated. The NC Ⅱ design was used to carry out incomplete diallel crosses between three genetic improved Ga waxy inbred lines as paternal and eight waxy inbred lines as maternal. The main agronomic traits were identified in 24 hybrid combinations. The results showed that the difference of general combining ability (GCA) and special combining ability (SCA) for agronomic traits of paternal and maternal were highly significant. The Ga waxy inbred lines had good combining ability effects. The Ga inbred hne CM327 had higher GCA effects and its hybrid combinations had obvious advantages in many traits such as yield, ear height and number of kernels per row. The Ga inbred line CM327 had good potential in heterosis utilization. The breed- ing and application of Ga waxy inbred lines were in favor of germplasm amplification and heterosis utilization in waxy corn.
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