ZHANG Xue-yan,LI Kun,MA Li-juan,et al.Effects of Calcium Regulation on the Physiological Properties of Cucumber Under Salt Stress[J].Northern Horticulture,2013,37(13):5-8.
Ca2+调控对黄瓜幼苗耐盐性生理指标的影响
- Title:
- Effects of Calcium Regulation on the Physiological Properties of Cucumber Under Salt Stress
- 文章编号:
- 1001-0009(2013)13-0005-04
- Keywords:
- calcium regulation; cucumber; salt tolerance
- 分类号:
- S 6422
- 文献标志码:
- A
- 摘要:
- 摘要：针对温室土壤盐渍化引起的作物盐害加剧问题，以温室主栽作物黄瓜为试材，在100 mmol/L NaCl处理条件下，设计0、20、40、60 mmol/L CaCl2处理，研究了不同浓度钙源加入对黄瓜幼苗生长的渗透调节物质、抗氧化酶系统以及光合特性的影响。结果表明：盐处理10 d后，加入20、40 mmol/L CaCl2处理较CK处理显著降低了超氧化物歧化酶（SOD）和过氧化物酶（POD）活性，但降低比率＜10％；外源加入20、40 mmol/L CaCl2可显著降低丙二醛（MDA）含量、相对电导率和伤害度，显著增加可溶性糖含量；加入CaCl2处理较CK处理显著降低植株的光合特性，其中20 mmol/L CaCl2处理显著降低了植株水分利用效率。综合分析表明，外源加入20 mmol/L CaCl2可显著缓解盐分对黄瓜幼苗的伤害，提高其耐盐性。
- Abstract:
- Soil salinization has caused salt damage to crops in greenhouse.Taking cucumber as material，the effects of different concentrations of calcium (Ca2+) (0，20，40，60 mmol/L CaCl2) on the osmotic regulation substance of growth，antioxidant system and photosynthetic characters of cucumber treated with 100 mmol/L NaCl were studied.The results showed that the POD and SOD activity by 20 and 40 mmol/L CaCl2 treatments were lower than CK treatments，but the rate was lower than 10％，relative leaf electrical conductivity，the degree of leaf damage，and leaf MDA content were lower than CK treatment by 20 and 40 mmol/L CaCl2 treatments，and whose soluble sugar content were also higher than CK treatment.Supplying Ca2+ could reduce the photosynthetic indices，and supplying 20 mmol/L CaCl2could reduce water use efficiency.So supplying 20 mmol/LCaCl2 could relieve salt damage to cucumber seedlings，increased the cucumber salt tolerance.
参考文献/References:
[1]杨月红,孙庆艳,沈浩.植物的盐害和抗盐性[J].生物学教学,2002,27(11):1-2.
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备注/Memo
第一作者简介：张雪艳 (1981-)，女，河北保定人，博士，讲师，现主要从事设施蔬菜栽培与生理等研究工作。E-mail:zhangxueyan123@sina.com.