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在贵阳对从国际玉米小麦改良中心引进的七组共101个玉米品种进行了农艺性状的鉴定和遗传力和遗传变异系数的测定,结果表明:供试的国际玉米品种具有较大的产量潜力。然而,大多数品种表现晚熟,植株和穗位均偏高,收获时籽粒数含水量偏大。六个性状中,以散粉日数的遗传力为最大(81.33％),随后依次是吐丝日数,株高,水分含量,穗位高和产量。而遗传变异系数以产量性状为最大(9.62％),随后依次是穗位高,株高,散粉日数,水分含量和吐丝日数。
In Guiyang, the identification of agronomic traits and the determination of heritability and coefficient of variation of genetic diversity among 101 maize varieties introduced from International Wheat Maize Improvement Center were carried out. The results showed that the international maize varieties tested had greater yield potential. However, most of the cultivars were late-maturing with higher plant and ear positions and larger grain water content at harvest. Among the six traits, the heritability of scattered powder days was the largest (81.33%), followed by the number of silking days, plant height, water content, ear height and yield. The coefficient of variation (CV) was the highest in yield traits (9.62%), followed by the highest ear height, plant height, the number of loose days, the moisture content and the number of silking days.