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The Genetic Anatomy of a Patented Yellow Bean

^a Department of Agronomy and Crop Science, University of Padova, Agripolis, Via Romea 16, 35020 Legnaro, PD, Italy
^b Department of Food Science and Technology, University of California, 1 Shields Avenue, Davis, CA 95616-8598, USA
^c Department of Agronomy and Range Science, University of California, 1 Shields Avenue, Davis, CA 95616-8515, USA

View larger version (116K): [in a new window]   Fig. 1. Yellow-seed cultivars analyzed in this study. Mayocoba (MX 1959) and Canario (PE) are representative of the parents that gave rise to the Peruano type cultivar class. Examples of this class are the Mexican cultivars Azufrado Pimono 78 (the original Peruano-type cultivar released in 1978) and Azufrado Peruano 87 (released in 1987) (Voysest, 2000). Enola is a patented and PVP certified yellow-seeded cultivar (Proctor, 1999; http://www.ars-grin.gov/cgi-bin/npgs/html/acchtml.pl? 1536394; verified 27 January 2004). Sulphur BN142 is an ancient U.S. cultivar described as early as 1931 (Hedrick 1931).

View larger version (41K): [in a new window]   Fig. 2. Principal coordinate analysis of AFLP diversity in a sample of 56 common bean cultivars. Square symbols: Middle American gene pool; circles: Andean gene pool. Boxed entries and filled symbols: yellow seed coat entries. AP78: Azufrado Peruano 78; AP87: Azufrado Peruano 87; AR: Azufrado Regional 87. The eigenvalues of the three axes are 58, 7, and 5%. For further explanations about the identity of the different groups, see text. For the identity of each entry, see Table 1.

View larger version (23K): [in a new window]   Fig. 3. UPGMA dendrogram showing the relationships among AFLP fragment profiles found in three Peruano-type bean cultivars: Enola, Azufrado Peruano 87 (AP87), and Mayocoba 1998. Each branch represents a different combination. Individuals to the right of vertical bars have identical combinations. The numbers within the tree are bootstrap values.