Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: 10/18/2001
Publication Date: 8/1/2003
Citation: HAYES, P.M., COSTRO, A., MARQUEZ-CEDILLO, L., COREY, A., HENSON, C.A., JONES, B.L., KLING, J. GENETIC DIVERSITY FOR QUANTITATIVELY INHERITED AGRONOMIC AND MALTING QUALITY TRAITS. von Bothmer, R., van Hintum, T., Knupffer, H., Sato, K., editors. Elsevier Press, New York, NY. Diversity in Barley (Hordeum vulgare). Chapter 10. 2003. p. 147-169. Interpretive Summary:
Technical Abstract: Barley breeding efforts have been primarily directed at manipulating traits with quantitative variation. In spite of this, diversity and quantitative traits are not often discussed together in the plant breeding and genetics literature. Typically genetics has been limited to models where phenotypes allowed for Mendelian analysis and genetic tools were primarily statistical. In the mid-1980's, the interactions between breeding research programs and genetics research programs increased due to the availability of abundant DNA-level markers and the development of computer-based analytical methods. Breeders and geneticists were then able to collaborate in developing and testing hypotheses regarding the number, location, effect, and interactions of genes influencing quantitative traits. These genes were termed "Quantitative Trait Loci" (QTL). This review covers (i) diversity in agronomic traits, (ii) diversity in malting quality traits, and (iii) the current status of QTL analysis in barley and the application of QTL tools to the analysis of genetic diversity in barley and crop improvement.