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Asian Journal of Plant Sciences
  Year: 2010 | Volume: 9 | Issue: 2 | Page No.: 94-98
DOI: 10.3923/ajps.2010.94.98
 
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Possible Roles of the Leaves of Two Paspalum Species in Salinity Tolerance

Olusola O. Shonubi

Abstract:
In this study, the possible roles of the leaves of two Paspalum species, P. vaginatum and P. scrobiculatum in their salinity tolerance was investigated as a follow up to previous experiments. This experiment determined changes in the concentration of sodium, chloride and related ions as well as water, chlorophyll and sugar content in their young and tagged leaves over four harvests. Results showed significant increase in salt concentration in the tagged leaves as compared to the near constant salt concentration in young leaves of P. vaginatum. In P. scrobiculatum, there was significant increase in salt concentration in both the young and tagged leaves. Calcium concentration was significantly higher in P. vaginatum than P. scrobiculatum but was significantly higher in the tagged leaves of P. scrobiculatum than its young leaves. The chlorophyll content of the young leaves in P. vaginatum was unaffected with harvest but it significantly decreased in the tagged leaves in both species. Paspalum vaginatum maintained significantly higher water content in its leaves than P. scrobiculatum. Sugar content in young leaves was not much affected in P. vaginatum but was significantly higher in P. scrobiculatum. The result indicated that the leaves of P. vaginatum were able to accumulate salt in older tagged leaves and store water to keep salinity to tolerable levels. Paspalum scrobiculatum could neither regulate the amount of salt in the young leaves nor accumulate water to dilute excess salt uptake but appear to accumulate sugar and calcium which may slightly ameliorate the effects of salt stress.
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How to cite this article:

Olusola O. Shonubi , 2010. Possible Roles of the Leaves of Two Paspalum Species in Salinity Tolerance. Asian Journal of Plant Sciences, 9: 94-98.

DOI: 10.3923/ajps.2010.94.98

URL: https://scialert.net/abstract/?doi=ajps.2010.94.98

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