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Mapping physiological traits in barley

Published online by Cambridge University Press:  01 September 1997

R. P. ELLIS ,
B. P. FORSTER ,
R. WAUGH ,
N. BONAR ,
L. L. HANDLEY ,
D. ROBINSON ,
D. C. GORDON  and
W. POWELL
R. P. ELLIS
Affiliation:
Cell and Molecular Genetics Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
B. P. FORSTER
Affiliation:
Cell and Molecular Genetics Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
R. WAUGH
Affiliation:
Cell and Molecular Genetics Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
N. BONAR
Affiliation:
Cell and Molecular Genetics Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
L. L. HANDLEY
Affiliation:
Cellular and Environmental Physiology Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
D. ROBINSON
Affiliation:
Cellular and Environmental Physiology Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
D. C. GORDON
Affiliation:
Cellular and Environmental Physiology Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
W. POWELL
Affiliation:
Cell and Molecular Genetics Department, Scottish Crop Research Institute, Invergowrie, Dundee DD2 2DA, UK
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Abstract

Amplified fragment length polymorphisms (AFLPs) offer a reproducible, multiplex DNA assay by which to genotype mapping populations. We have evaluated physiological traits in barley seedlings grown in an hydroponic system and given a salt treatment. Multiple regression was used to show associations between AFLPs and quantitative traits. Effects at different loci were detected in stress treatments in comparison to the control implying that either novel gene action was induced by salt stress or that normal activity was reduced to a low level where alternate gene action is revealed. The QTLs occurred on all chromosomes but there appeared to be clusters of loci on chromosomes 1 (7H), 4 (4H), 5 (1H) and 6 (6H). The significance of our results is discussed in the context of studies to explore the barley genome and the application of the results of these genetical analyses to barley breeding.

Keywords

AFLPsHordeum vulgare (barley)gene mappingphysiological traitssalt tolerance
Type
Research Article
Information
The New Phytologist , Volume 137 , Issue 1 , September 1997 , pp. 149 - 157
Copyright
© Trustees of the New Phytologist 1997

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