Abstract
Abstract Random amplified polymorphic DNAs (RAPDs) were analyzed for three populations of Juniperus ashei : ancestral (Ozona, TX), a typical central Texas limestone substrate, and an adjacent population on deep black soil. A total of 175 RAPD bands were analyzed by principal coordinate analyses. As with the previous research based on morphology and volatile leaf oils, the Ozona plants clustered separately. In addition, there appears to be differentiation between the trees on limestone and those adjacent on blackland soil (separated by 30–50 m). It is hypothesized that new mutations and/or allelic combinations have enabled the J. ashei to invade the tall grasses and deep soils. If true, this could help explain the recent (and continuing) invasion of abandoned farmlands by Juniperus in the United States.
Published Version
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