The drought resistance genotype (such as Fl) has a significant higher ARS/WRS than that of drought tolerant genotype(such as $), the former has ahigher water use and WUE.

• 御旱型的抗旱品种(如杂交一代户单四号)其ARS/WRS值显著高于耐旱型品种(如母本天四)，前者的产量和耗水量也显著高于后者，但其水分利用效率也高。