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用不同浓度的外源水杨酸对玉米幼苗进行处理,研究水杨酸对玉米幼苗生长和发育的影响。结果表明:一定浓度的水杨酸处理对玉米幼苗的鲜重、苗高、叶绿素含量、超氧化物歧化酶(SOD)、过氧化物酶(POD)的活性以及丙二醛(MDA)、相对外渗率都有明显影响,在水杨酸浓度为1.5mg/L时效果较好,鲜重和苗高分别比对照增加了45.6%和28.2%;叶绿素含量、SOD和POD的活性也分别比对照增加了147.7%、53.8%和72.4%;MDA和相对外渗率分别比对照下降9.6%和17.3%。
Maize seedlings were treated with different concentrations of exogenous salicylic acid to study the effects of salicylic acid on the growth and development of maize seedlings. The results showed that salicylic acid treatment had significant effects on fresh weight, seedling height, chlorophyll content, SOD activity, POD activity and MDA content of corn seedlings. The results showed that the effect of salicylic acid concentration was 1.5mg / L, the fresh weight and seedling height were increased by 45.6% and 28.2% respectively compared with the control; the chlorophyll content, SOD and POD activity were also respectively The control increased by 147.7%, 53.8% and 72.4%, MDA and relative leakage decreased by 9.6% and 17.3% respectively compared with the control.