以8个玉米自交系为供试材料，采用2因素裂区设计，在玉米苗期到成熟期遮阴（遮光率为90%），研究玉米自交系的耐阴性及其在遮光胁迫条件下的植株性状的变化。结果表明：参试材料耐阴湿的程度从高到低为：06CIn967-11>06CIn892-2>06CIn967-4>06CIn892-11>06CIn891-4>06CIn891-15>06C984-2>06C9 84-8，其中，同一来源的自交系耐阴性差异不显著，不同来源的自交系耐阴性有一定差异；在弱光下，玉米材料的雄穗分化、植株和叶片的生长受到了极显著抑制，不同基因型材料的植株性状对遮光的反应也不同；遮光对不同性状的影响不同，对雄穗分化的影响最大。因此可以根据不同材料性状的变化来筛选耐阴材料。

Eight maize inbred lines were used as tested materials, with shading treatment (90% shading control) from seeding stage to maturity stage. The experiment of two factors split-plot design was carried out to study the shade-tolerance and plant traits’ changes of the maize inbred lines. The order of the shade-tolerance level of the materials was: 06CIn967-11>06CIn892-2>06CIn967-4>06CIn892-11>06CIn891-4>06CIn891-15>06C984-2>06 C984-8, the difference of the inbred lines of same source wasn’t significant; there was certain difference among inbred lines of different source. The plant and leaf growth, tassel differentiation was restrained significantly; the shading reaction between different genotype lines was different. The shading reaction of different character was also different. The reaction of the tassel differentiation was the strongest of all. The shade-tolerance type inbred lines should be selected based on the traits changes of different maize inbred lines.