February 7, 2009
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#4
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Tomatovillian™
Join Date: Feb 2006
Location: MO z6a near St. Louis
Posts: 1,349
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The difference in seed coat color in the two "normal" Uncle Steve's might be related to this. Just a guess.
Quote:
Published online 16 January 2008
Published in Crop Sci 48:189-193 (2008)
© 2008 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
Slow Darkening in Pinto Bean (Phaseolus vulgaris L.) Seed Coats Is Controlled by a Single Major Gene
Donna C. Junk-Knievel, Albert Vandenberg and Kirstin E. Bett*
Dep. of Plant Sciences, Univ. of Saskatchewan, Saskatoon, SK, Canada S7N 5A8
* Corresponding author (k.bett@usask.ca
Postharvest seed coat darkening is a significant problem in pinto beans (Phaseolus vulgaris L.), resulting in product that is undesirable to consumers and that is discounted in the marketplace. There is a range in the rate and extent of darkening among pinto germplasm and recently, slow-darkening (SD) lines have been identified. Line 1533-15, an SD line from the University of Saskatchewan, was crossed to CDC Pintium, a regular darkening pinto, and seed of F1 and F2 individuals and F5:6 recombinant inbred lines were assessed for their darkening phenotype. Segregation data indicated that there is a single, recessive gene that controls the SD phenotype. All F2 individuals from a cross between 1533-15 and Pinto Saltillo, another SD line, were slow-darkening suggesting that the phenotype is controlled by the same gene in both lines. The simple genetics of this trait should facilitate the introduction of this trait into breeding programs, thereby increasing the quality of pinto beans being developed
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--Ruth
Some say the glass half-full. Others say the glass is half-empty. To an engineer, it’s twice as big as it needs to be.
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