摘要
研究旨在探索外源5-磺基水杨酸处理对番茄种子萌发及幼苗生长的效应,以5-磺基水杨酸浸种,对3叶1心的幼苗进行叶面喷施处理。接着对幼苗进行低温处理,然后取样测定相关生理生化指标。结果表明:5-磺基水杨酸能有效地提高SOD、CAT和POD活性,降低MDA含量和相对电导率,与此同时,游离氨基酸和可溶性蛋白质含量也有所增加。不同处理间数据缺乏比较一致的变化规律。5-磺基水杨酸可以保护生物膜,使其免受低温伤害,由此改善番茄幼苗对低温的适应能力。相对而言,处理2的效果最好。不同的品种对相同的5-磺基水杨酸处理的响应可能会存在差别。
In order to study the effects of 5-sulfosalicylic acid on seed germination and seedling growth of tomato under low temperature stress, exogenous 5-sulfasolicylic acid was applied by presoaking and spraying on seedling leaves. Then, the seedlings were submitted to low temperature treatment. Samples were measured for physiological and biochemical indexes. The results indicated that the activities of SOD, CAT and POD were improved by 5-sulfosalicylie acid, but MDA content and relative electro conductivity were decreased. The levels of free amino acid and soluble proteins were increased. There was no consistent variation among different treatments. 5-sulfosalicylic acid could improve the adaptability of tomato seedlings to low temperature stress to a certain extent by protecting biomembrane from cold damage, Treatment 2 had the best effect, different varieties had different response to the same 5-sulfasolicylic acid treatment.
出处
《中国农学通报》
2015年第31期68-73,共6页
Chinese Agricultural Science Bulletin
基金
科技部"中俄主要蔬菜基因资源多样化比较研究"(2011DFR31180-3)
关键词
番茄
5-磺基水杨酸
浸种处理
耐冷性
低温胁迫
tomato
5-sulfosalicylic acid
soaking treatment
cold tolerance
low temperature stress
