钙对贮藏期马铃薯块茎渗透调节物质及SOD的影响  

Effects of Calcium on Osmotic Adjustment Substances and SOD in Potato Tubers during Storage

作　　者：李婷婷 陈彦云 沈文娟[3] 陈陆祺[4] 陈银花 曹君迈 LI Ting-ting;CHEN Yan-yun;SHEN Wen-juan;CHEN Lu-qi;CHEN Yin-hua;CAO Jun-mai(Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China/Key Lab. for Restoration and Reconstruction of Degraded Ecosystem in North-western China of Ministry of Education, Ningxia University, Ningxia Yinchuan 750021, China;School of Life Science, Ningxia University Yinchuan, Ningxia Yinchuan 750021, China;Ningxia Hui Autonomous Region Seed Farm, Ningxia Yinchuan 750021, China;College of Biological Science and Engineering, North Minzu University Yinchuan, Ningxia Yinchuan 750021, China)

机构地区：[1]宁夏大学西北土地退化与生态恢复国家重点实验室培育基地/宁夏大学西北退化生态系统恢复与重建教育部重点实验室,宁夏银川750021 [2]宁夏大学生命科学学院,宁夏银川750021 [3]宁夏回族自治区原种场,宁夏银川750021 [4]北方民族大学生物科学与工程学院,宁夏银川750021

出　　处：《西南农业学报》2019年第5期1011-1015,共5页Southwest China Journal of Agricultural Sciences

基　　金：国家重点研发项目“薯类主食化加工关键新技术装备研发及示范”(2016YFD0401300)

摘　　要：【目的】本文研究了钙对贮藏期马铃薯块茎渗透调节物质及SOD的影响。【方法】采用随机区组设计,喷施Ca(NO3)2设置6个钙肥施用水平。在马铃薯贮藏期间,测定马铃薯块茎中几种透调节物质含量及超氧化物歧化酶活性。【结果】马铃薯经田间喷施Ca(NO3)2后,块茎内可溶性糖、脯氨酸等物质的含量显著增加;显著抑制MDA累积量;SOD保护酶的活性显著提高。综合分析本试验研究结果,提出Ca(NO3)2喷施的最佳浓度为0.6kg/hm^2。【结论】钙能有效提高细胞渗透调节能力和原生质保护能力,从而提高了马铃薯块茎的耐贮性能。【Objective】This paper aimed to study the effects of calcium on osmotic regulators and SOD in potato tubers during storage.【Method】 A randomized block design was applied to spray Ca(NO 3) 2 to set 6 levels of calcium fertilizer application. The content of several permeability regulators and the activity of superoxide dismutase (SOD) in potato tubers were determined during storage.【Result】After spraying Ca(NO 3) 2 in the field, the contents of soluble sugar, proline and other substances in potato tubers were significantly increased, the activity of SOD protective enzymes was significantly increased, and the accumulation of MDA was significantly inhibited.【Conclusion】The comprehensive analysis of the results in this study indicated that the optimum concentration of Ca(NO 3) 2 was 0.6 kg/hm^2. Calcium could effectively improve cell osmotic regulation and protoplast protection, thus improving the storage resistance of potato tubers.

关 键 词：马铃薯 钙 渗透调节物质 超氧化物歧化酶 

分 类 号：S532[农业科学—作物学]