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(American Journal of Botany. 2000;87:141-146.)
© 2000 Botanical Society of America, Inc.

Exploiting wild population diversity and somaclonal variation in the salt marsh grass Distichlis spicata (Poaceae) for marsh creation and restoration1

Denise M. Seliskar2,0 and John L. Gallagher0

0 Halophyte Biotechnology Center, College of Marine Studies, University of Delaware, 700 Pilottown Road, Lewes, Delaware 19958 USA

ABSTRACT

The salt marsh grass Distichlis spicata was regenerated from tissue culture and propagated in a greenhouse. Selected regenerants, along with selections from six wild populations, were grown for two years in a common garden flood-irrigated thrice weekly with tidal creek water. Selected wild and regenerated plants were also planted in a created salt marsh. Significant differences among regenerant and wild population selections were found in several functionally important salt marsh plant characteristics, including potential detritus production, belowground organic matter production, canopy structure, and decomposition rate. A combination of characteristics not found in the wild populations was evident in a regenerated line that exhibited both a high detritus production potential and a high decomposition rate. The amount of variation that occurred among regenerants from one parental line via somaclonal variation was similar to that which occurred among the wild population selections. Results of this study suggest that tissue culture may provide a means of producing marsh grasses with specific characteristics for directing the functional development of newly created salt marshes.

Key Words: Distichlis spicata • marsh creation • marsh restoration • Poaceae • salt marsh • somaclonal variation • tissue culture




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P. A. V. Zandt and S. Mopper
Delayed and carryover effects of salinity on flowering in Iris hexagona (Iridaceae)
Am. J. Botany, November 1, 2002; 89(11): 1847 - 1851.
[Abstract] [Full Text] [PDF]


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