The results shown that maize relatives of genus Zea can be directly crossed with maize, and grained F1 seeds.Maize relatives and their interspecies hybrids have strong heterosis photoperiod response.

• 结果表明，玉米近缘种的多数材料都能与玉米杂交结实，它们的杂种F1均表现出强的杂种优势和光敏反应；