7Levitt J.Response of plants to Environmental Stresses[J].Academic Press,1980,2:110-211.
8Turner N C.Drought resistance and adaptation to water deficits in crop plants[A].Harry mussall.Stress physiology in crop plants[C].New York:Wiley and Sons,1979.343-372.
9May L H,Milthorpe P L.Drought resistance of crop plants[J].Field Crop Abstr,1962,(15):171-179.
10Bolanos J.Eight cycles of selection for drought tolerance in tropical maize.Z.Response in yield,biomass anff redialion[J].Field Crop Res,1993,31(3-4):233-252.
