盐胁迫下抗坏血酸对小麦幼苗保护功能的分析

Analysis on Ascorbic Acid Protection for Wheat Seedling under Salt Stress

探讨抗坏血酸(As A)对盐胁迫下小麦幼苗生长的影响,采用100 mmol/L Na Cl胁迫条件下的两种小麦(烟农19和长5222)幼苗进行抗坏血酸处理,研究盐胁迫下外源As A对小麦幼苗生长的调控作用。结果表明:外源抗坏血酸(As A)可以缓解盐胁迫对小麦幼苗的抑制,降低丙二醛(MDA)、H2O2在幼苗体内的相对含量,并且过氧化物酶(POD)、过氧化氢酶(CAT)相对含量提高。两个小麦品种对As A的敏感程度不同,As A对缓解烟农19的盐胁迫效果相对较好。

In order to determine the regulatory effect of As A on growth of wheat seedling under salt stress, experiment was carried out using 100mmol/L Na Cl to induce salt stresses. The result showed that application of exogenous As A can reduce the damage from salt stress, decrease the content of catalase(CAT)and H2O2,increase the activity of POD and CAT.