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HYDRILLA INVADES WASHINGTON, D.C. AND THE POTOMAC
Author(s) -
Steward Kerry K.,
Van Thai K.,
Carter Virginia,
Pieterse Arnold H.
Publication year - 1984
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1984.tb12498.x
Subject(s) - hydrilla , biology , plant reproductive morphology , weed , sexual reproduction , botany , reproduction , habit , aquatic plant , ecology , macrophyte , psychology , psychotherapist
The aquatic weed hydrilla ( Hydrilla verticillata Royle) was discovered growing in the Potomac River, south of Alexandria, VA, in Kenilworth Aquatic Gardens, Washington, D.C., and in the Chesapeake and Ohio (C&O) Canal near Seneca, MD. Cultures in Florida of the Kenilworth clone produced male flowers. This is the first report of the occurrence of the male in the U.S. Two distinct isoenzyme patterns have been identified for plants from various locations in the U.S., corresponding to a monoecious strain and a dioecious female. The occurrence of the wild colonies of the monoecious Hydrilla greatly increase the potential for physiological diversity through sexual reproduction, which may have serious consequences for the management of this weed.