Mapping of Quantitative Trait Loci for Malting Quality in a Winter X Spring Barley (Hordeum Vulgare, L.) Cross
Author | : Adeline M. Oziel |
Publisher | : |
Total Pages | : 82 |
Release | : 1993 |
ISBN-10 | : OCLC:36212722 |
ISBN-13 | : |
Rating | : 4/5 (22 Downloads) |
Book excerpt: Making quality and winterhardiness in barley are "ultimate" phenotypes composed of component, quantitatively inherited traits. A 69-point genome map of the seven chromosomes of barley was used, in conjunction with multi-environment phenotypes for grain yield and malting quality, to determine the chromosome locations of quantitative trait loci (QTLs). A combined analysis of the two environments identified QTLs that were both common and unique to each environment. Dispersed QTLs with positive relationships provide ready targets for marker-assisted selection. Overlapping QTLs for agronomic and making quality QTLs with favorable alleles contributed by alternate parents will require further, higher resolution mapping to determine if negative relationships are due to linkage or pleiotropy. There is preliminary evidence for orthologous agronomic trait and malting QTLs in barley. This QTL analysis will hopefully assist in the rapid development of winter making varieties that will maximize the profitability of Oregon barley production.