等离子体处理对玉米幼苗抗逆性的影响

用4个不同剂量0.5A(T1)、1.0A(T2),1.5A(T3)、2.0A(T4)的等离子体处理玉米种子,研究幼苗在干旱、冷害和盐害等逆境处理后对玉米幼苗抗逆性的影响。结果表明,等离子体处理玉米种子可提高玉米幼苗在干旱、冷害和盐害条件下的抗逆性,但以提高幼苗抗旱能力最明显。干旱条件下,4个不同剂量的等离子体处理可使玉米幼苗的可溶性糖含量较对照平均提高5.5%,脯氨酸含量比对照植株平均增加24.7%,POD活性比对照平均增加33.3%,电解质外渗率平均降低20.9%。1.5A(T3)的等离子体处理剂量在所有处理中效果最明显,可作为等离子体处理玉米种子提高抗逆性的适宜处理剂量。

Effects of Plasma Treatment on Maize Seeding Resistance

Resistances of maize seeding under salt and cold and drought stress were investigated seed treated by different dose 0.5A(T1), 1.0A(T2), 1.5A(T3), 2.0A(T4) the plasma. The results indicated that maize seed treated by the plasma improved the resistantance of stress of maize at seeding stage. Compared with the control, soluble sugar content of maize seeding leaf was increased average 5.5% by the plasma treatment under drought stress, proline content increased average 24.7%, peroxidase(POD) activity improved average 33.3%, electrolytes leakage rate decreased average 20.9%. The dose of 1.5A was the most significant dose, which can be the primary treatment dose in improving resistance of maize.