摘要
以不同浓度水杨酸(SA)处理的南瓜幼苗,其中250 mg/L SA处理差异显著。从形态指标上表明SA处理可促进南瓜壮苗的形成。同时研究了4,15℃2种低温胁迫条件下最佳浓度水杨酸处理与25℃处理作为对照的南瓜幼苗抗寒性指标的变化。结果表明:经SA处理的脯氨酸、丙二醛与对照的差异极显著,外源SA能抑制脯氨酸的形成积累,且能提高南瓜幼苗叶片细胞膜的稳定性,抑制MDA形成积累。因此外源水杨酸能显著提高南瓜的抗寒性。
Muskmelon seedlings were sprayed by salicylic acid （SA） solution of some concentrations. The results showed that SA obviously raised the index of high quality seedling and promoted high quality seedling lorming of muskmelon seedlings ; and 250 mg/L was the best concentrations of SA. Salicylic acid is a matter of phenol, existing in superior plants. Effects of salicylic acid （250 mg/L） on cold resistance of muskmelon were studied. The results suggested that the contents of praline and MDA were significantly different between the treatment and the control under the same stress of low temperature. Endogenous SA inhibited accumulation of praline and MDA and hence increased significantly the cold resistance of muskmelon.
出处
《齐齐哈尔大学学报（自然科学版）》
2009年第4期60-62,共3页
Journal of Qiqihar University(Natural Science Edition)
关键词
南瓜幼苗
水杨酸(SA)
低温胁迫
生理效应
muskmelon seedlings
salicylic acid （SA）
chilling resistance
physiological effect
