Influence of Calcium on the Plant Height, Photosynthesis, Fluorescence and Chlorophyll Content of Calligonum arborescens under NaCl Stress

Wang Jingjing; Zhang Wenpeng; Xu Danghui

doi:10.7522/j.issn.1000-694X.2013.00453

2015 , Vol. 35 >Issue 1: 167 - 174

DOI: https://doi.org/10.7522/j.issn.1000-694X.2013.00453

Influence of Calcium on the Plant Height, Photosynthesis, Fluorescence and Chlorophyll Content of Calligonum arborescens under NaCl Stress

Wang Jingjing ,
Zhang Wenpeng ,
Xu Danghui

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State Key Laboratory of Grassland and Agro-ecosystems/school of life Sciences, Lanzhou University, Lanzhou 730000, China

Received date: 2013-11-08

Revised date: 2013-12-16

Online published: 2015-01-20

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Abstract

NaCl stress can restrain plant growth. Studies have shown that application calcium can alleviate NaCl stress to some extent, so as to promote plant growth. In this paper, we studied the plant height, net photosynthetic, PSII photochemical efficiency, chlorophyll content of Calligonum arborescens under NaCl stress when different calcium sources are added, so as to study the alleviation of NaCl stress by calcium. The results indicate that in the case of not adding calcium salt, plant's height, net photosynthetic, F_v/F_m and chlorophyll content declined with the increasing of sodium chloride concentration; After adding calcium chloride and calcium nitrate, the above indicators all showed a trend of decline after rising first; When NaCl concentration was 8 g·L^-1 the net photosynthetic and F_v/F_m, chlorophyll content of C. arborescens after adding calcium chloride were higher than that of calcium nitrate, however adding calcium nitrate will be better if the NaCl concentration was 16 g·L^-1; When the calcium concentration was 5 mM the plant supplied with CaCl₂ was higher than those supplied with Ca(NO₃)₂, nevertheless, Ca(NO₃)₂ might be a better choice when calcium concentration was 10 mM,15 mM and 20 mM. The above results showed that the morphological indicators relative to the physiological indexes, was not sensitive to NaCl stress. The relief effect of calcium to NaCl stress was related to the concentration of sodium chloride, in other words, there is an optimal ratio of sodium/calcium, higher or lower than which, calcium salt relief effect would fall; The different relief effect between calcium chloride and calcium nitrate depends on the outside of the concentration of NaCl, when plants were under moderate NaCl stress the relief effect of calcium chloride was better than calcium nitrate, however, the calcium nitrate relief well when the plants were under serious NaCl stress.

Key words： NaCl stress; calcium salt; Calligonum arborescens; plant height; net photosynthetic; PSII photochemical efficiency; chlorophyll content

Cite this article

Wang Jingjing , Zhang Wenpeng , Xu Danghui . Influence of Calcium on the Plant Height, Photosynthesis, Fluorescence and Chlorophyll Content of Calligonum arborescens under NaCl Stress[J]. Journal of Desert Research, 2015 , 35(1) : 167 -174 . DOI: 10.7522/j.issn.1000-694X.2013.00453

References

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