LIU Xin-xing,LUO Jun-jie.Effects of Exogenous Calcium on Physiological Indexes of Pea Seedlings Under Salt Stress[J].Northern Horticulture,2013,37(14):24-27.
外源钙对盐胁迫下豌豆幼苗生化指标的影响
- Title:
- Effects of Exogenous Calcium on Physiological Indexes of Pea Seedlings Under Salt Stress
- 文章编号:
- 1001-0009(2013)14-0024-04
- Keywords:
- calcium; salt stress; osmoregulation
- 分类号:
- S 643.3
- 文献标志码:
- A
- 摘要:
- 以 “陇豌1号” 豌豆为试材，以蛭石与砂砾（1∶1混合）为栽培基质，研究了浸种和根施CaCl2 2种方式对盐胁迫（NaCl 171 mmol/L）下两叶一心期幼苗超氧化物歧化酶（SOD）、过氧化物酶（POD）活性、丙二醛（MDA）、脯氨酸和可溶性糖含量的影响。结果表明：2种施钙处理下，适宜浓度的CaCl2能显著增加豌豆幼苗SOD和POD保护酶活性，提高渗透调节物质脯氨酸和可溶性糖含量，降低丙二醛含量。综合各项指标，根施处理对盐胁迫的缓解效果较浸种好，其中14 mmol/L CaCl2根施处理效果最佳，浸种处理只对短期胁迫内幼苗抵御盐害的能力有一定提高。
- Abstract:
- Taking ‘Longwan No1’pea as test material,with mixed vermiculite and sand(1V∶1V)to cultured pea seedlings in the period of two leaves of one.Used seeds soaking and roots watering ways to regulate salt stress of NaCl(171 mmol/L),the contrast was nutrient solution with 171 mmol/L NaCl,the effect of calcium on activities of SOD and POD content of MDA,Pro and soluble sugar under salt stress were studied.The results showed that calcium treatment could significantly increase activities of SOD and POD in pea seedlings,and improve osmoregulation substances proline and soluble sugar content,decrease MDA content.Combined of various indicators,roots watering was more effective against salt stress than seeds soaking,and the optimal concentration of calcium was at 14 mmol/L.The seeds soaking only could promote the ability against salt stress in short times.
参考文献/References:
[1]赵可夫.植物抗盐生理[M].北京:中国科学出版社,1993.
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备注/Memo
第一作者简介：刘新星（1986-），女，硕士，研究方向为作物遗传育种。E-mail:lxx19860621@163.com.