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. / Graduation date: 1994
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/35753 |
| Date | 14 June 1993 |
| Creators | Oziel, Adeline M. |
| Contributors | Knapp, Steven J. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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