Читать книгу Dry Beans and Pulses Production, Processing, and Nutrition - Группа авторов - Страница 50

Consumer preference for pinto beans is often dictated by seed color. Most pinto bean cultivars possess a brown mottled color on beige background; however, this pigmentation changes with postharvest aging. The bright beige background darkens with storage and has been used as a means for purchase decisions in traditional markets for discriminating between fresh/new crop (bright color) and old/aged (dark color) beans. Plant breeders were able to isolate this characteristic as a heritable trait (recessive sd gene). This has resulted in the recent release of several SD cultivars (Vibrant, Radiant, Lumen, Gleam, Palomino, Staybright) that take considerably longer to darken during storage (Rodrigues et al. 2019; Miklas et al. 2020). SD pinto beans produced in controlled field trials exhibited slightly better canning quality than standard pintos. The distinctive color of SD pintos requires strict segregation as a market class to assure lot uniformity.