Submitted to: Journal of Aquatic Plant Management
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 20, 2003
Publication Date: January 20, 2004
Citation: Madeira, P.T., Van, T.K., Center, T.D. 2004. An improved molecular tool for distinguishing monecieous and dioecious hydrilla. Journal of Aquatic Plant Management. 42:28-31. Interpretive Summary: Two types of hydrilla, an invasive aquatic weed, are known to occur in the United States. One type (dioecious), possessing only female flowers, is common in the southeast. The second type (monoecious), which possesses both male and female flowers on the same plant, occurs mainly in the central Atlantic and northeastern states. As the ranges of each type have expanded they have begun to overlap. Management techniques can differ for the types so ecosystem managers need tools to distinguish them. We have sequenced individuals of the two types from around the United States and describe 3 differences which distinguish them. We also describe a simple biological (PCR) reaction which distinguishes the types by producing a product only for the monoecious type.