2010～2015年河北省夏播玉米审定品种分析

Analysis on Summer Maize Varieties Approved in Hebei Province between 2010 to 2015

为了解河北省夏播玉米最新审定品种的变化规律,依据2010~2015年河北省夏播玉米品种审定公告的相关数据,对审定通过品种的数量、类型、来源、植株性状、产量和品质等指标进行了统计、汇总和分析。结果表明:2010~2015年河北省玉米夏播审定品种共60个,其中有90.0%的品种来源于企业,高密组审定品种数占审定总数的60.0%,高密仍然是研究主流趋势;审定品种的株高和穗位均呈降低趋势,叶片数和品质指标均无明显变化,其中,高密组株高、穗位、生育期、雄穗分枝数和平均产量的变异系数均小于低密组和早熟组。研究结果可为今后夏播玉米育种工作提供参考。

To understand the maize breeding tendency, data of summer maize varieties recently approved by Hebei Variety Approval Committee from 2010 to 2015 were analyzed. The results showed that there were 60 summer maize varieties approved in Hebei Province from 2010 to 2015, 90% of the varieties came from enter- prises, and 60.0% of them in the high density group, high density is still the mainstream trend of research. The plant height and ear height were all decreased, while there was no obvious differences on the leaf number and quality. Additionally, the variation coefficient of plant height, ear height, growth period, tassel branch number, and yield in the high density group were all lower than that of low density group and early maturity group. The results can provide references for the breeding of summer maize in future.