Potential Heterotic Crosses in Hops as Estimated by AFLP-Based Genetic Diversity and Coefficient of Coancestry Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/v979v364x

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by American Society of Brewing Chemists, and can be found at:  http://www.asbcnet.org/journal/toc.htm.

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  • Hop is a dioecious perennial with female plants grown commercially for brewing purposes. Parent selection in hop breeding on the basis of heterotic potential has not been reported in literature even though dominance has been reported in hops for several economically important traits. The objectives of this study were to determine if amplified fragment length polymorphism (AFLP)-based genetic distance among male and female accessions accurately reflect pedigree relationships and present information on potential heterotic crosses in hop. Nineteen cultivars were analyzed for genetic distance to 82 male accessions representing the assumed diversity of U.S. hops. Genetic distances (GD) between male/female pairs were estimated using AFLP (490 polymorphic bands). Distance estimates comparing males with females ranged from 0.169 to 0.62 with an overall average of 0.306. For each hop female, the 10 most genetically diverse and 10 most genetically similar males were identified and grouped. Coefficients of coancestry (COA) for each male/female pair within these groups were calculated using pedigree analysis. Values of COA for the genetically similar pairs (COA[subscript avg] = 0.046) were significantly higher than the COA for the diverse pairs (COA[subscript avg] = 0.013), suggesting that choosing male/female pairs on the basis of AFLP-based genetic distance may predict heterotic potential in crosses when GD >0.36.
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  • Henning, J. A., Townsend, M. S., & Kenny, S. (2004). Potential heterotic crosses in hops as estimated by AFLP-based genetic diversity and coefficient of coancestry. Journal of the American Society of Brewing Chemists, 62(2), 63-70.
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  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2013-10-21T22:44:41Z No. of bitstreams: 1 TownsendMShaunCropSoilSciencesPotentialHeteroticCrosses.pdf: 98273 bytes, checksum: d68bce3030c10f8b3ce262cfa4e3d0dd (MD5)
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