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Quantifying Spatial and Temporal Genotypic Changes in White Clover Populations by RAPD Technology

USDA-ARS, Pasture Systems and Watershed Management Research Unit, Curtin Road, Building 3702, University Park, PA 16802-3702

View larger version (59K): [in a new window]   Fig. 1. The sampling grid design used for collecting white clover samples from permanent quadrats. PIN, permanent steel stakes in the pasture paddocks used to place the steel grid. The numbered positions on the concentric circles and the center indicate where leaves were collected, if present

View larger version (21K): [in a new window]   Fig. 2. Location of clonal plants in Quadrats 2, 3, and 4 and the dates sampled. The symbols are plotted as the distance from the left-hand pin shown in Fig. 1 and each symbol represents a sampled genotype. Overlapping symbols in panel B indicates presence of a clonal plant at the same position on two sampling dates. The legend indicates the quadrat and date the genotype was sampled

View larger version (19K): [in a new window]   Fig. 3. Location of clonal plants in Quadrats 1 to 4 and the dates sampled. Symbol description as in Fig. 2. Clonal members were found in more than one quadrat in panels B, C, and D on the same or different dates

View larger version (18K): [in a new window]   Fig. 4. Location of clonal plants in Quadrats 2, 3, and 4 and the dates sampled. Symbol description as in Fig. 2. Clonal members were found in more than one quadrat