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以萝卜为试材,研究了不同浓度的吲哚乙酸(IAA)和水杨酸(SA)(0、0.3、0.6、0.9、1.2、1.5mmol·L~(-1))对NaCl胁迫下萝卜幼苗生理特性的影响。结果表明:NaCl胁迫下萝卜幼苗的各项生理指标都发生了显著变化。经适宜浓度的吲哚乙酸和水杨酸处理后,萝卜幼苗的还原糖含量、脯氨酸含量、丙二醛含量和相对电导率显著降低,叶绿素含量显著升高,对盐害有一定的缓解作用。但是浓度过高,又会形成新的胁迫伤害。其中,IAA的最佳浓度为0.9mmol·L~(-1),SA的最佳浓度为0.6mmol·L~(-1)。
Radish was used as experimental materials to study the effects of different concentrations of IAA and SA (0, 0.3, 0.6, 0.9, 1.2, 1.5 mmol·L -1) Effect of seedling physiological characteristics. The results showed that all the physiological indexes of radish seedlings under NaCl stress changed significantly. After treated with appropriate concentrations of indole acetic acid and salicylic acid, the content of reducing sugar, proline, malondialdehyde and relative electric conductivity of radish seedlings decreased significantly, chlorophyll content increased significantly, and the salinity was relieved effect. But the concentration is too high, it will form a new coercion. Among them, the optimal concentration of IAA was 0.9 mmol·L -1, and the optimum concentration of SA was 0.6 mmol·L -1.