WANG Guoxia,LIU Ruixia,TIAN Yunfang,et al.Effects of Calcium Regulation Time on Physiological Responses of? Camellia oleifera Under Variable and Low Temperature Stress[J].Northern Horticulture,2018,42(21):122-128.[doi:10.11937/bfyy.20174607]
变温低温胁迫下钙调控时间对油茶生理响应机制的影响
- Title:
- Effects of Calcium Regulation Time on Physiological Responses of? Camellia oleifera Under Variable and Low Temperature Stress
- Keywords:
- Camellia oleifera; variable and low temperature stress; calcium regulation; physiology and biochemistry
- 文献标志码:
- A
- 摘要:
- 以“豫油茶1号”“豫油茶3号”和“大别山1号”3个优良油茶品种为试材，对其进行变温低温胁迫处理，以喷施清水为对照。在低温处理前、后24 h分别进行CaCl2处理，分别在不同时间点测定相对电导率、丙二醛（MDA）、脯氨酸、可溶性糖、可溶性蛋白质含量以及超氧化物歧化酶(SOD)和过氧化物酶(POD)活性，以探讨不同调控时间对油茶抗低温效果的影响。结果表明：在低温胁迫下，上述生理指标均呈现先升高再降低的趋势，与对照相比，喷施CaCl2溶液后能够降低油茶叶片的相对电导率、可溶性糖、丙二醛的增幅，提高油茶叶片的脯氨酸、可溶性蛋白质含量，提高超氧化物歧化酶（SOD）、过氧化物酶（POD）活性，且低温前喷施CaCl2溶液较低温后喷施CaCl2溶液的效果要好。说明低温前喷施CaCl2溶液更有利于提高油茶的抗寒能力。
- Abstract:
- Three fine varieties of Camellia oleifera inclouding ‘Yu 1’ ‘Yu 3’ and ‘Da Bieshan 1’ were used as materials and treated at variable and low temperature.CaCl2 treatment was carried out before and after 24 hours of low temperature treatment,respectively.The relative conductivity,the contents of MDA,proline and soluble sugar,soluble protein，and activities of SOD and POD were measured at different time points,in order to explore the effect of different regulation time on the anti-cold effect of Camellia oleifera.The results showed that the above physiological indexes all increased firstly and then decreased under low temperature stress.Compared with the control,the effect of spraying CaCl2 solution could reduce the increase of the relative conductivity,the contents of soluble sugar and MDA of Camellia oleifera,increase the contents of proline and soluble protein,and increase the activities of SOD and POD.Moreover,spraying CaCl2 solution before low temperature had better effect than that of spraying CaCl2 solution after low temperature.It indicated that spraying CaCl2 solution before low temperature was more beneficial to improve the cold resistance of Camellia oleifera.
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备注/Memo
第一作者简介：王国霞（1977-），女，河南平顶山人，博士，副教授，现主要从事经济植物栽培利用等研究工作。E-mail：wgxia191919@sina.com.基金项目：河南省科技计划基础与前沿研究计划资助项目（162300410161）；河南省高等学校青年骨干教师资助项目(2014GGJS-147)；河南省高等学校重点科研资助项目（14B180037）；郑州师范学院科技创新团队支持计划资助项目。收稿日期：2018-04-07