GRAIN AND MALT MILLING ENERGIES RELATIVE TO MALTING QUALITY PARAMETERS IN A MUTANT OF cv. TROUBADOUR

Abstract
The mutant barley genotype TR49 and its parental cultivar Troubadour were grown at 5 sites throughout Spain in 1990. Large differences between sites were observed for a range of grain and malt quality characters. TR49 had very slightly higher milling energy in the grain than Troubadour, but, during the early stages of malting, showed a more rapid loss in milling energy. From the relationship between milling energy and other quality parameters, this was deduced to result from a more efficient and extensive modification of the endosperm cell walls in the mutant genotype.