当前位置: 首页 > 文章 > 不同供钾水平下Na~+对棉花幼苗根系生长和K、Ca、Mg、Na含量的影响 湖北农业科学 2014,53 (19) 4543-4546
Position: Home > Articles > Effects of Na~+ on Root Growth of Cotton Seedlings and Contents of K,Ca,Mg under Different Potassium Availability Hubei Agricultural Sciences 2014,53 (19) 4543-4546

不同供钾水平下Na~+对棉花幼苗根系生长和K、Ca、Mg、Na含量的影响

作  者:
胡泽彬;卜晶晶;王素芳;张志勇
单  位:
河南科技学院生命科技学院/河南科技学院棉花研究所
关键词:
棉花幼苗;Na Cl胁迫;供钾水平;根系生长;钾、钠、钙、镁含量
摘  要:
在水培条件下研究了不同Na Cl浓度(10.5和50.5 mmol/L)对不同钾供应水平(0.05和2.50 mmol/L)下棉花幼苗根系生长及K、Ca、Mg、Na含量的影响。结果表明,0.05 mmol/L K条件下,Na Cl降低了根系中Ca、K和Mg含量,降低了K/Na值,但两种浓度的Na Cl均显著提高了根系干物质量、根系总长度和表面积,其中直径≤0.2 mm的细根长度和表面积增加幅度最大,而2.50 mmol/L K条件下,仅10.5mmol/L的Na Cl显著促进了根系总长度和表面积,但对根系干物质量没有显著影响,并且10.5 mmol/L的Na Cl显著降低了K/Na值,而对Ca、K和Mg含量无显著影响。
译  名:
Effects of Na~+ on Root Growth of Cotton Seedlings and Contents of K,Ca,Mg under Different Potassium Availability
作  者:
HU Ze-bin;BU Jing-jing;WANG Su-fang;ZHANG Zhi-yong;School of Life Science and Technology/Cotton Research Institute,Henan Institute of Science and Technology;
关键词:
cotton seedlings;;Na Cl stress;;K level;;root growth;;K,Na,Ca,Mg contents
摘  要:
The effects of Na Cl with low concentration(10.5 and 50.5 mmol/L) on root growth of cotton seedling and contents of K,Ca,Mg and Na were studied under different K levels(0.05 and 2.5 mmol/L).Under 0.05 mmol/L K,Na Cl reduced the contents of Ca,K and Mg and K/Na value,but significantly increased weight of dry root and total root length and surface area.Among which,fine root with diameter≤0.2 mm was enhanced with the highest margin.Under 2.5 mmol/L K,only 10.5 mmol/L Na Cl significantly increased total root length and surface area with no significant effects on weight of dry root.10.5 mmol/L Na Cl significantly inhibited K/Na Value with no significant effects on contents of Ca,K and Mg.

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