Salt Stress Induced Alteration in Photosynthetic Pigments and Polyphenols of Pennisetum alopecuroides (L.)

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  • ,IN
  • ,IN
  • ,IN

DOI:

https://doi.org/10.18311/jeoh/2010/18339

Keywords:

Pennisetum alopecuroides, Photosynthetic pigments. Polyphenols, Salinity

Abstract

Salinity is one of the major abiotic stresses that adversely affect crop productivity and quality In the present investigation effect of NaCI salinity on the photosynthetic pigments and polyphenols of the leaves of the Pennisetum alopecuroides (L) Spreng var. Mourdy was studied. The total chlorophyll (chl.) content of the mature leaves was increased only by 4.7%, 9.2% and 1.5% at 25, 50 and 100 mM, respectively but later on decreased with increasing concentrations of NaCI. Chlorophyll, 'a'appears to be more sensitive to salinity in the experimental grass species than chlorophyll, 'b'. Maximum increase in carotenoid content observed was 56.3%. The maximum increase In polyphenols was 111. 6% at 300 mM concentration. Electrical conductivity of the pot soil increased to a maximum by 525 % in the pot soils of Pennisetum alopecuroides following external addition of NaCI at 300 mM, while, total dissolved solids (TDS) content increased to 868 %. An increase in the photosynthetic pigments at lower salt levels might be due to the osmotic adjustment mechanism developed by the grass species to incumbent with salt stress. The increased levels of polyphenols at elevated salinity might be due to the accumulation of secondary metabolites

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Author Biographies

A.V. Mane

Department of Environmental Sciences, Fergusson College, Pune 411 004, M.S.

B.A. Karadge

Department of Botany, Shivaji University, Kolhapur, MS.

J.S. Samant

Department of Environmental Sciences, Shivaji University, Kolhapur, M.S.

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Published

2017-12-06

How to Cite

Mane, A., Karadge, B., & Samant, J. (2017). Salt Stress Induced Alteration in Photosynthetic Pigments and Polyphenols of Pennisetum alopecuroides (L.). Journal of Ecophysiology and Occupational Health, 10(3-4), 177–182. https://doi.org/10.18311/jeoh/2010/18339
Received 2017-12-06
Accepted 2017-12-06
Published 2017-12-06

 

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