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- Title
Resistance to <em>Rhynchosporium secalis</em> in six Nordic barley genotypes.
- Authors
Robinson, J.; Jalli, M.; Lindqvist, H.
- Abstract
Six six-row Nordic spring barley genotypes (Hordeum vulgare L.) were assessed in the field in Finland (1994 and 1995) for resistance to Rhynchosporium secalis (Oud.) J.J. Davis, the causal pathogen of scald, in artificially inoculated plots. The barleys were known not to contain major genes for resistance to scald and the purpose of these experiments was to identify quantitative differences in resistance to scald which might be exploitable in a breeding programme. Disease development was monitored, grain yield and yield components were recorded, and these data were compared with measurements taken from plants in plots kept free of disease. Data, averaged over both years, for disease development on the uppermost three leaves -- areas under disease progress curves, terminal severity and apparent infection rates -- indicated that 'Verner', 'Pohto' and 'Pokko' were symptomatically significantly more resistant to scald than 'Arve', 'Loviisa' and Jo 1599. Grain yields, thousand-grain weights, test weights and proportions of plump grains were all significantly reduced in plots inoculated with scald compared with those kept free of disease; 'Verner' appeared to be the most useful genotype for use in crossing programmes to improve scald resistance in Finnish barleys.
- Subjects
HORDEUM; RHYNCHOSPORIUM secalis; BARLEY leaf scald disease; BREEDING; BARLEY; GENETICS
- Publication
Plant Breeding, 1997, Vol 116, Issue 1, p101
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1111/j.1439-0523.1997.tb00983.x