GrainGenes Reference Report: JCS-29-153
Reference
JCS-29-153
Title
Mapping quantitative trait loci for starch granule traits in barley.
Journal
Journal of Cereal Science
Year
1999
Volume
29
Pages
153-160
Author
Borem A Mather DE Rasmusson DC Fulcher RG Hayes PM
Abstract
Starch accumulates in barley (Hordeum vulgare L.) endosperm in large (type A) and small (type B) granules. The sizes, shapes and relative proportions of A and B granules may affect the quality of barley malt for brewing. The objective of this study was to use genetic markers to map quantitative trait loci (QTL) affecting starch granule traits in a cross between a malting barley cultivar, Morex, and a feed barley cultivar, Steptoe. Data on starch granule dimensions were obtained using digital image analysis. With simple interval mapping, a region of chromosome 2 (2H) was found to contain QTL affecting the overall mean granule volume, the proportion of A granules, the mean volume of A granules, the mean maximum diameter of A granules and the mean F-shape of B granules. This region also affected days to heading and plant height, but contained no QTL for grain of malt quality traits. With composite interval mapping, QTL affecting starch granule traits were detected in two additional regions, one on chromosome 4 (4H) affecting the mean F-shape of B granules and one on chromosome 7 (5H) affecting the mean maximum diameter of A granules.
External Databases
Agricola: 2010-88760
Keyword
chromosome maps
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: JCS-29-153
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||