YAO Lingbai,HAN Haixia.Effect of Salt Stress on Growth and Index of Physiology and Biochemical of Paphanus sativus L.var.radculus Pers.[J].Northern Horticulture,2016,40(13):5-8.[doi:10.11937/bfyy.201613002]
盐胁迫对樱桃萝卜生长及生理生化指标的影响
- Title:
- Effect of Salt Stress on Growth and Index of Physiology and Biochemical of Paphanus sativus L.var.radculus Pers.
- Keywords:
- salt stress; growth; nutrients; peroxidase(POD); Paphanus sativus L.var.radculus Pers.
- 文献标志码:
- A
- 摘要:
- 以“红樱桃”萝卜为试材，采用无土基质栽培法，分析了20～120 mmol?L-1浓度的NaCl胁迫对樱桃萝卜最大叶长、肉质根直径、可溶性糖、可溶性蛋白质、维生素C、丙二醛、脯氨酸含量和过氧化物酶（POD）活性的影响，以研究盐渍土对樱桃萝卜生长及生理生化特性的影响。结果表明：盐处理对樱桃萝卜植株生长呈低浓度（20 mmol?L-1）促进，高浓度（80 mmol?L-1以上）抑制的趋势；60～80 mmol?L-1的NaCl浓度对樱桃萝卜的胁迫作用明显，随处理浓度升高，樱桃萝卜可溶性糖、叶片可溶性蛋白质、丙二醛、脯氨酸含量和POD活性均显著升高，肉质根维生素C含量显著下降；当处理浓度高于100 mmol?L-1时，樱桃萝卜受胁迫程度加深，可溶性糖含量大幅下降，可溶性蛋白质含量和POD活性波动下降，丙二醛含量继续升高。
- Abstract:
- Taking Paphanus sativus L.var.radculus Pers. as material,the experiment was applied a soilless substrate’s pot experiment.The effect of salt stress on growth and physiology characteristics were stuided.The effects of NaCl between 20 mmol?L-1 and 120 mmol?L-1 by measuring the indexes,such as the max length of leaves,root diameter,the content soluble sugar,soluble protein,vitamin C,malondialdehyde(MDA),free proline and peroxidase(POD)activity.The results showed that the growth indexes were significantly promoted in the low NaCl concentration(≤20 mmol?L-1),and then inhibited in the high NaCl concentration(≥80 mmol?L-1).The physiology indexes were significantly inhibited in the NaCl concentration(60-80 mmol?L-1)that with the increasing of the NaCl concentration the content of soluble sugar,soluble protein of leaves,MDA and free proline and POD activity were all significantly increased.However,the content of vitamin C in root was significantly decreased in the concentration.And the degree of salt damage to Paphanus sativus L.var.radculus Pers.became higher with the big decrease of soluble sugar,the fluctuating decrease of soluble protein and POD activity and the increase of MDA.
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备注/Memo
第一作者简介：姚岭柏（1979-），男，内蒙古呼伦贝尔人，硕士，讲师，现主要从事植物栽培生理学等研究工作。E-mail:yaolingbai@163.com.