Abstract
Winterhardiness in cereals is the final expression of a number of interacting component traits, including, but not limited to, low temperature tolerance, growth habit, photope-riod response, and crown fructan content (Hayes et al., 1996). Responses to selection for winterhardiness have been limited, leading Fowler and Gusta (1979) to conclude that genetic variation may be exhausted. Thomashow (1990) summarized over 20 reports that, cumulatively, assign cold tolerance genes to every chromosome in each of the three genomes of wheat. Based on homoeology, this would mean a cold tolerance gene on each of the seven chromosomes of barley. Given this combination of complexity and poor prospects, progress in developing superior winter habit barley varieties and in understanding the genetic mechanisms determining winterhardiness may best be achieved by locating the genetic determinants of each component trait. Quantitative trait locus (QTL) analysis is a useful tool for dissecting complex phenotypes.
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© 1997 Springer Science+Business Media New York
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Hayes, P. et al. (1997). The Dicktoo x Morex Population. In: Li, P.H., Chen, T.H.H. (eds) Plant Cold Hardiness. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0277-1_8
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DOI: https://doi.org/10.1007/978-1-4899-0277-1_8
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