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当前位置: 首页 > 文章 > NaCl胁迫对3个彩色树种的盐害及Na~+,K~+,Ca~(2+)器官分布的影响 浙江林业科技 2019,39 (6) 25-31
Position: Home > Articles > Effect of NaCl Stress on Injury and Na~+, K~+ and Ca~(2+) Distribution in Three Color-leaved Tree Species Journal of Zhejiang Forestry Science and Technology 2019,39 (6) 25-31

NaCl胁迫对3个彩色树种的盐害及Na~+,K~+,Ca~(2+)器官分布的影响

作  者：
杨升;王金旺;刘星;李效文;潘凤跃;陈秋夏
单  位：
浙江省亚热带作物研究所
关键词：
彩色树种;耐盐性;NaCl胁迫;离子平衡
摘  要：
为了研究彩色树种在NaCl胁迫下矿质离子的响应机制,采用0,85,170,340,510 mmol·L~(-1)五种不同浓度NaCl溶液对金叶复叶槭Acer negundo 'Aurea',紫叶合欢Albizia spp.和金叶皂荚Gleditsia triacaanthos 'Sunburst'2年生苗进行胁迫处理,50天后,根据其表型评判各树种盐害等级,并测定其根、茎和叶中Na~+,K~+,Ca~(2+)含量,计算各组织的K~+/Na~+和Ca~(2+)/Na+值。结果表明,在340 mmol·L~(-1) NaCl浓度下,金叶复叶槭绝大部分叶片边缘焦枯,盐害等级为3,紫叶合欢和金叶皂荚部分叶片焦枯,盐害等级为2,而510 mmol·L~(-1)NaCl浓度下,紫叶合欢盐害等级为4级,而金叶皂荚的盐害等级为3级;3个树种根、茎和叶中Na~+含量均随着盐浓度增加而增加,而K~+含量和K~+/Na~+均显著下降(P<0.05),并且金叶皂荚降幅少于金叶复叶槭和紫叶合欢;Ca~(2+)含量均随着盐浓度增加呈下降趋势,根和叶的Ca~(2+)/Na~+在金叶皂荚中的降幅小于金叶复叶槭和紫叶合欢。因此,在NaCl胁迫下,金叶皂荚盐害等级低,归因于其具有较强的拒Na~+和保留K~+,Ca~(2+)能力,从而维持体内K~+/Na~+,Ca~(2+)/Na+平衡。
译  名：
Effect of NaCl Stress on Injury and Na~+, K~+ and Ca~(2+) Distribution in Three Color-leaved Tree Species
作  者：
YANG Sheng;WANG Jin-wang;LIU Xing;LI Xiao-wen;PAN Feng-yue;CHEN Qiu-xia;Zhejiang Institute of Subtropical Crops;
关键词：
color-leaved tree species;;salt-tolerance;;Na Cl stress;;ion balance
摘  要：
Experiments were carried out on NaCl stress with 0, 85, 170, 340, 510 mmol·L~(-1) on 3-year color-leaved tree species namely Acer negundo'Aurea', Albizia spp., Gleditsia triacanthos 'Sunburst' in 2016. Content of Na~+, K~+,Ca~(2+), value of K~+/Na~+, Ca~(2+)/Na+of root, stem and leaf and injuries of treated seedlings were measured 50 days later. The results demonstrated that A. negundo 'Aurea' showed injury of class 3, A. spp. and G.triacanthos 'Sunburst' class 2 under treatment of 340 mmol·L~(-1) NaCl, while under treatment of 510 mmol·L~(-1) Na Cl, A. negundo 'Aurea' and A. spp.class 4, G. triacanthos 'Sunburst' class 3. The content of Na~+ in the tested organs of three species increased with NaCl concentration, but the content of K~+ and value of K~+/Na~+ decreased significantly. The content of Ca~(2+) had negative relation with the increase of NaCl concentration, and Ca~(2+)/Na+ of G. triacanthos 'Sunburst' in root and leaf showed less decline. The experiment resulted that salt damage of G. tricanthos 'Sunburst' was the lowest under NaCl stress.

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