N. Pecchioni et al., QUANTITATIVE RESISTANCE TO BARLEY LEAF STRIPE (PYRENOPHORA-GRAMINEA) IS DOMINATED BY ONE MAJOR LOCUS, Theoretical and Applied Genetics, 93(1-2), 1996, pp. 97-101
A major gene underlying quantitative resistance of barley against Pyre
nophora graminea, a seed-borne pathogen causing leaf stripe, was mappe
d with molecular markers in a barley doubled haploid (DH) population d
erived from the cross 'Proctor' x 'Nudinka'. This quantitative trait l
ocus (QTL) accounts for r(2) = 58.5% and was mapped on barley chromoso
me 1, tightly linked to the ''naked'' gene. A second resistance QTL ac
counting for 29.3% of the variation in the trait was identified on the
P arm of barley chromosome 2. Another two minor QTLs were detected by
further analysis. None of the QTLs was found in the barley chromosome
2 ''Vada'' region studied by Giese et al. (1993).