水杨酸和氯化钙对干旱胁迫下番茄幼苗生理特性的影响

doi:10.3969/j.issn.1004-1524.2016.10.09

浙江农业学报 ›› 2016, Vol. 28 ›› Issue (10): 1687-1694.DOI: 10.3969/j.issn.1004-1524.2016.10.09

水杨酸和氯化钙对干旱胁迫下番茄幼苗生理特性的影响

张冬野, 赵婷婷, 李景富, 姜景彬, 张贺, 陈秀玲, 许向阳^*

东北农业大学园艺学院,黑龙江哈尔滨 150030

收稿日期:2016-01-28 出版日期:2016-10-15 发布日期:2016-11-20
通讯作者: 许向阳,E-mail:xxy709@126.com
作者简介:张冬野(1992—),女,黑龙江绥化人,硕士研究生,主要从事番茄育种研究。E-mail:286868955@qq.com
基金资助:
国家自然科学基金资助项目(31272171); 现代农业产业技术体系专项资金(CARS-25-A-15); 黑龙江省杰出青年科学基金(JC201204)

Effect of salicylic acid and calcium chloride on physiological characteristics of tomato seedlings under drought stress

ZHANG Dong-ye, ZHAO Ting-ting, LI Jing-fu, JIANG Jing-bin, ZHANG He, CHEN Xiu-ling, XU Xiang-yang^*

College of Horticulture, Northeast Agricultural University, Harbin 150030, China

Received:2016-01-28 Online:2016-10-15 Published:2016-11-20

摘要/Abstract

摘要： 分别用不同浓度的水杨酸(SA)和氯化钙(CaCl₂)处理番茄品种东农11537幼苗,处理3 d后进行干旱胁迫,在干旱的第1、3、5和7天观察植株表型,测定叶片相关生理指标,并比较2种处理的抗旱效果、最佳抗旱浓度。结果表明,干旱胁迫下,与喷施去离子水的对照组相比,适宜浓度的SA和CaCl₂处理均能有效缓解番茄叶片相对含水量的降低,抑制相对电导率和丙二醛含量的增加,同时,提高番茄叶片SPAD值、脯氨酸和可溶性蛋白的含量,提高超氧化物歧化酶、过氧化氢酶、过氧化物酶的活性,有效提高番茄幼苗的抗旱性。0.3 mmol·L^-1的SA和10 mmol·L^-1的CaCl₂处理提高番茄幼苗抗旱性的效果较佳,0.3 mmol·L^-1 SA效果最佳。

关键词: 水杨酸, 氯化钙, 番茄, 干旱胁迫, 生理特性

Abstract: Dongnong 11537 tomato seedlings were applied exogenously with different concentrations of salicylic acid (SA) and calcium chloride (CaCl₂) for 3 d and then treated by drought stress. Plant phenotypes were observed and physiological characteristics were investigated, effects of SA and CaCl₂ upon drought stress were compared and the optimal concentrations of SA and CaCl₂ were screened. The results showed that compared with control group, under drought stress, appropriate application of SA and CaCl₂ could effectively slow down the reduction of relative water content of tomato leaves, suppress the increase of relative conductance rate and malondialdehyde content, increase SPAD value, contents of proline and soluble protein, stimulate the activities of superoxide dismutase, catalase and peroxidase, indicating that appropriate application of SA and CaCl₂ could effectively improve drought resistance of tomato seedlings. 0.3 mmol·L^-1 SA and 10 mmol·L^-1 CaCl₂ had the optimal effect for improving drought tolerance of tomato seedlings. To summarize, the effect of 0.3 mmol·L^-1 SA was more prominent.

Key words: salicylic acid, calcium chloride, tomato, drought stress, physiological characteristics

中图分类号:

S641.2

张冬野, 赵婷婷, 李景富, 姜景彬, 张贺, 陈秀玲, 许向阳. 水杨酸和氯化钙对干旱胁迫下番茄幼苗生理特性的影响[J]. 浙江农业学报, 2016, 28(10): 1687-1694.

ZHANG Dong-ye, ZHAO Ting-ting, LI Jing-fu, JIANG Jing-bin, ZHANG He, CHEN Xiu-ling, XU Xiang-yang. Effect of salicylic acid and calcium chloride on physiological characteristics of tomato seedlings under drought stress[J]. , 2016, 28(10): 1687-1694.

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水杨酸和氯化钙对干旱胁迫下番茄幼苗生理特性的影响

Effect of salicylic acid and calcium chloride on physiological characteristics of tomato seedlings under drought stress

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