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Molecular Characterization of the U.S. Peanut Mini Core Collection Using Microsatellite Markers

^a Agric. Sci. Cent. at Clovis, New Mexico State Univ., 2346 SR 288 Clovis, NM 88101
^b Texas Agric. Exp. Stn., Texas A&M Univ., Lubbock, TX 79403, and Texas Tech Univ., Dep. of Plant and Soil Science, Lubbock, TX 79409
^c USDA-ARS, Plant Stress and Germplasm Development Unit, Cropping Systems Research Lab, 3810 4th Street, Lubbock, TX 79415. This research was supported by a USDA grant (2004-34186-14533) through the Southwest Consortium for Plant Genetics and Water Resources and New Mexico State University Agric. Exp. Stn. Mention of trademark or proprietary product does not constitute a guarantee or warranty of a product by the USDA and does not imply its approval to the exclusion of other products that may also be suitable

View larger version (49K): [in this window] [in a new window]   Figure 1. Neighbor-joining dendrogram of 72 A. hypogaea accessions from the U.S. peanut mini core revealed by using similarity coefficients based on Nei's genetic distance. The letters after each accession number refer to market types as: val, subsp. fastigiata/fastigiata/valencia; spa, subsp. fastigiata/vulgaris/spanish; vir, subsp. hypogaea/hypogaea/virginia; run, subsp hypogaea/hypogaea/runner; ???, intermediate market type. Country of origin is abbreviated as the first three letters of the country after the subspecies (for e.g., IND = India). The dashed line indicates groupings of accessions into the two major subspecies and dotted lines indicate grouping under each subspecies into market types. The numbers inside the parentheses indicate bootstrap values for groupings with >50% bootstrap support based on 1000 bootstrap samples.

View larger version (10K): [in this window] [in a new window]   Figure 2. Dendrogram of four market types of the peanut accessions from the U.S. mini core based on 12 mapped simple sequence repeat (SSR) markers used in the study. The numbers inside the parentheses indicate bootstrap values for groupings with >50% bootstrap support based on 1000 bootstrap samples.