对８ 个热带、亚热带玉米群体在郑州生态条件下的表现进行鉴定和评价，结果表明，热带、亚热带群体散粉、吐丝期显著延迟，雌雄不协调，植株和穗位高、叶片数增多、空秆率高，结实性差，果穗性状均明显劣于温带对照，在郑州生态条件下不能直接利用，但是群体内具有较大的遗传变异和选择潜力，可以用来拓宽现有玉米种质的遗传基础；不同热带、亚热带群体的光周期敏感性不同；不同性状对光周期反应的敏感程度不同，ＡＳＩ、吐丝期、穗位高、叶片数、穗粒重可作为鉴定光周期敏感性的较好指标－ Eight tropical and subtropical maize populations were identified and evaluated under ecological conditions in Zhengzhou. The results showed that the populations of tropical and subtropical populations were significantly delayed in terms of loose powder and silking stage, uncoordinated male and female, high in plant and ear position, increased number of leaves, The stalk rate was high, the seed setting was poor, the ear traits were significantly worse than those of the temperate zone and could not be directly utilized in the ecological conditions in Zhengzhou. However, the population had greater genetic variation and selection potential and could be used to broaden the genetic basis of the existing corn germplasm . The photoperiod sensitivity of different tropical and subtropical populations was different. The sensitivity of different traits to photoperiod responses was different. ASI, silking stage, ear height, leaf number and ear grain weight could be used to identify photoperiod sensitivity index-