| Genetic study of beta-glucan content and beta-glucanase activity has been facilitated by recent developments in quantitative trait loci (QTL) analysis QTL for barley and malt beta-glucan content and for green and finished malt beta-glucanase activity were mapped using a 123-point molecular marker linkage map from the cross of Steptoe/Morex Three QTL for barley beta-glucan, 6 QTL for malt beta-glucan, 3 QTL for beta-glucanase in green malt and 5 QTL for beta-glucanase in finished malt were detected by interval mapping procedures The QTL with the largest effects on barley beta-glucan, malt beta-glucan, green malt beta-glucanase and finished malt beta-glucanase were identified on chromosomes 2, 1, 4 and 7, respectively A genome map-based approach allows for dissection of relationships among barley and malt beta-glucan content, green and finished malt beta-glucanase activity, and other malting quality parameters. |
