Under osmotic stress,exogenous Spd treatment inhibited the decrease of NCC-Spd level in Yedan 13 and enhanced its tolerance to stress.

• 外源Spd处理明显抑制了渗透胁迫下掖单13类囊体膜上NCC-Spd含量的下降,也提高了掖单13玉米幼苗的抗性;