The seedcoat color genotype of 'Prim' and the Manteca and Coscorron marketclasses of common bean

Anecdotal evidence exists for nonflatulence among Chilean Manteca and Cosco rron market classes of common bean (Phaseolus vulgaris L,), and there is an hypothesis that the seedcoat color may be associated with superior digesti bility, The inheritance of seedcoat color in 'Prim', a Manteca market-class dry bean, was investigated using a protocol employing genetic interpretati on of seedcoat colors in the F-1 from testcrosses of 'Prim' with a series o f tester stocks. Most of the genetic tester stocks were constructed previou sly by backcrossing selected recessive alleles for seedcoat color into a re current parent (5-593) with seedcoat color genotype P [Cr] D J G B V Rk Asp . The genetic tester stocks included two varieties, 'Masterpiece' and "V068 7', and testers constructed on the 5-593 background, viz,,j BC, 5-593, dj B C2 5-593, asp BC2 5-593, b v BC2 5-593, v BC2 5-593, and c(u) BC, 5-593, Th e seedcoat color genotype of 'Prim' was found to be P [C r] d j G b v(lae). The implications of this genotype for pigment chemistry are discussed.