Seedling response to salinity in four dune grasses from the Outer Banks of North Carolina

Seneca, E.D. (1972) Seedling response to salinity in four dune grasses from the Outer Banks of North Carolina. Ecology, 53 (3). pp. 465-471.

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Abstract

Seedlings of Ammophila breviligulata, Panicum amarulum, Spartina patens and Uniola paniculata were grown in sand culture supplied with 0, 0.5, 1, 2 or 4% NaCl. In A. breviligulata, S. patens and U. paniculata there was an inverse linear relationship between growth and increase in salinity, but seedlings of P. amarulum demonstrated a curvilinear response to salinity. A. breviligulata and U. paniculata remained green and maintained moderate growth at salinities up to 1% NaCl, just survived at 2% and died at 4% NaCl. P. amarulum grew better than A. breviligulata and U. paniculata at 2% NaCl, but also died at 4% NaCl, while some seedlings of S. patens survived for 28 days at 4% NaCl. Seedlings of S. patens collected from the field were more salt tolerant than those grown from seed collected in the field and germinated in the laboratory. Field- and laboratory-grown seedlings of the other species did not differ. In terms of seedling growth, salt tolerance was in the order: S. patens > P. amarulum > U. paniculata > A. breviligulata

Item Type:	Article
Author Affiliation:	Department of Botany and Soil Science, North Carolina State University, Raleigh, USA
Subjects:	Soil Science and Microbiology > Soil Sciences Crop Improvement
Divisions:	General
Depositing User:	Mr B Krishnamurthy
Date Deposited:	08 May 2012 14:55
Last Modified:	08 May 2012 14:55
Official URL:	http://dx.doi.org/10.2307/1934234
URI:	http://eprints.icrisat.ac.in/id/eprint/5172

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