Monoecious hydrilla plants surveyed from Delaware, Virginia and the Potomac (geographically, the closest hydrilla populations to Connecticut) reportedly lack the 450 b.p. band (Ryan et al. 1995) which we obtained as a major
amplification product for Connecticut plants. Thus, results from RAPD analysis indicate that Connecticut hydrilla represents
the dioecious strain, or at least that the Connecticut plants were not derived from the nearest hydrilla populations
which have been determined as monoecious.