Optimum Ca(NO₃)₂ supply develops salt tolerance in NaCl-stressed Cyclocarya paliurus seedlings

The effect of varying Ca(NO₃)₂ supply (0, 6, 12, and 18 mM) on growth, ion uptake, leaf chlorophyll concentration and photosynthesis of NaCl-stressed (85 mM NaCl) Cyclocarya paliurus seedlings was investigated. Addition of Ca(NO₃)₂ stimulated the shoot growth more than root growth. Ca(NO₃)₂ supply i...

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Published in:Horticulture, environment and biotechnology 2012, Environment, and Biotechnology, 53(1), , pp.20-23
Main Authors: Yao, Rui Ling, Guangxi Forestry Research Institute, Nanning, Guangxi, China, Wang, Yin, Guangxi Forestry Research Institute, Nanning, Guangxi, China
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
CALCIO
CALCIUM
CRECIMIENTO
CROISSANCE
FOTOSINTESIS
GROWTH
Life Sciences
PHOTOSYNTHESE
PHOTOSYNTHESIS
Plant Breeding/Biotechnology
Plant Ecology
Plant Physiology
POTASIO
POTASSIUM
Research Report
농학
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Summary:The effect of varying Ca(NO₃)₂ supply (0, 6, 12, and 18 mM) on growth, ion uptake, leaf chlorophyll concentration and photosynthesis of NaCl-stressed (85 mM NaCl) Cyclocarya paliurus seedlings was investigated. Addition of Ca(NO₃)₂ stimulated the shoot growth more than root growth. Ca(NO₃)₂ supply increased K+ and Ca²+ concentration, whereas the Na+ transport to the leaves was inhibited. There was a strong increase in the K+/Na+ ratio in the leaves of Ca(NO₃)₂-treated seedlings. Leaf chlorophyll concentration and photosynthesis rate were low, but both factors were enhanced by 12 mM Ca(NO₃)₂. Therefore, moderate Ca(NO₃)₂ supply (12 mM) had optimal effects on growth and metabolism of NaCl-stressed C. paliurus seedlings.
ISSN:2211-3452
2211-3460
DOI:10.1007/s13580-012-0088-1