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对6个玉米品种的三个方面,即单叶水分利用效率方差分析、不同水分处理及不同品种玉米单叶水分利用效率的SSR检验和气孔导度、蒸腾速率、光合速率与单叶水分利用效率关系这三个方面对单叶产量水分利用效率角度作了差异比较。农大108光合速率高,蒸腾速率低,单叶水分利用效率最高;哲单39蒸腾速率虽不高,但光合速率很低,导致单叶水分利用效率最低;其余品种居中。在干旱地区可通过选育光合速率对水分胁迫不敏感的品种,增强光合能力,提高水分利用效率,提高产量。
Three aspects of six maize cultivars, that is, variance analysis of water use efficiency of single leaf, SSR test of water use efficiency and water use efficiency of single leaf of different varieties, stomatal conductance, transpiration rate, photosynthetic rate and single leaf water use efficiency Relationship between these three aspects of the single leaf yield and water use efficiency perspective made a difference. Nongda 108 photosynthetic rate is high, transpiration rate is low, single leaf water use efficiency is highest; Zhe Dian 39 transpiration rate is not high, but photosynthetic rate is very low, resulting in the lowest single leaf water use efficiency; In arid areas, breeding photosynthetic rate of water stress insensitive varieties, enhance photosynthetic capacity, improve water use efficiency and increase yield.