外源钙对盐胁迫下花叶蔓长春生理生化特性的影响  

Effects of Exogenous Calcium on Physiological and Biochemical Characteristics of Vinca major cv.‘Variegata' Under Salt Stress

作　　者：张雪微[1] 张芝蕊 江文 王贝贝[1] 王羽淑 孙蕊[1] 刘磊[1] 骆建霞[1] 

机构地区：[1]天津农学院园艺园林学院,天津300384 [2]天津樱桃谷农业科技发展有限公司,天津301908

出　　处：《天津农学院学报》2017年第2期9-13,共5页Journal of Tianjin Agricultural University

基　　金：天津市农业科技成果转化与推广项目"新型耐盐碱地被植物及其繁育技术的转化"(201002240)

摘　　要：采用盆栽试验法,对盐胁迫下的花叶蔓长春(Vinca major cv.‘Variegata’)施加CaCl_2处理,通过对各生理生化指标的测定并结合隶属函数分析,探讨CaCl_2对花叶蔓长春盐胁迫的缓解作用。结果表明:在3 mg/g和4 mg/g盐胁迫下,CaCl_2处理可使可溶性糖含量、SOD活性和POD活性显著或极显著增加;在4 mg/g盐胁迫下,根系活力、可溶性蛋白含量随施CaCl_2浓度增加而上升;在各浓度盐胁迫下,CaCl_2可使净光合速率显著增加。综合分析认为:在中、低盐浓度胁迫下(3、4 mg/g),CaCl_2的缓解作用较大,浓度以10~20 mmol/L为宜;在高盐浓度胁迫下(5~7 mg/g),CaCl_2的缓解作用较小。The physiological and biochemical indexes of Vinca major cv. ＇Variegata＇ grown in pots under salt stress condition were determined and analyzed with the membership function after CaC12 treatment, aiming at exploring mitigative effects of CaC12 on salt （NaC1） stress. The results showed that soluble sugar content and activities of SOD and POD increased significantly or very significantly when the plants were treated by with CaC12 with concentrations of 3 mg/g and 4 mg/g. With the increasing of CaClz concentration root activity and soluble protein content were enhanced under salt concentration of 4 mg/g CaC12 treatment could increase net photosynthetic rate significantly under different salt concentrations. Conclusion could be drown from the comprehensive analysis that mitigative effects of CaCI： will be enhanced under low or moderate salt stress （3, 4 mg/g） and be weakened under the high salt stress （5-7 mg/g） , and that the appropriate CaC12 concentration used is from 10 to 20 mmol/L.

关 键 词：花叶蔓长春 盐胁迫 外源钙 生理生化特性 隶属函数 

分 类 号：S682.18[农业科学—观赏园艺] Q945.78[农业科学—园艺学]