The fusarium head blight (FHB) mapping population consisted of 180 F3 families developed from a cross between the variety "Apollo" (moderately susceptible) and the breeding line "Sgv.NB x MM.Sum3" (resistant). The FHB severity was evaluated in five locations. At the same time, two other traits namely, plant height and heading date were recorded to determine their correlation to FHB disease resistance. The map was constructed using the data of 227 molecular markers AFLP, RFLP and SSR on the 180 F3 families. The base map spans 1656,7 cM. The individual QTLs for FHB resistance, plant height and heading date were identified by the CIM analysis using the PLABQTL programe. Averaged over five different environments, four QTLs were detected for FHB resistance on 5AS, 3BS, 6BS and 7BS/5BL where they explained 37.0% of the phenotypic variance. In this study, three QTLs were detected for plant height on chromosomes 3BS, 6BS and 7BS/5BL. As for heading date, sixs QTLs were identified on chromosomes 3A, 6AL, 2BL, 4BL, 6BL and 7BS/5BL. The QTL on chromosome 7BS/5BL was located at a close support interval to the QTLs for shorter plant height, early heading date and higher FHB resistance. In the population under study, selection for FHB resistance genotypes can be done through marker-assisted selection (MAS) for the QTLs on the chromosomes 3BS, 5AL and 7BS/5BL.     «

The fusarium head blight (FHB) mapping population consisted of 180 F3 families developed from a cross between the variety "Apollo" (moderately susceptible) and the breeding line "Sgv.NB x MM.Sum3" (resistant). The FHB severity was evaluated in five locations. At the same time, two other traits namely, plant height and heading date were recorded to determine their correlation to FHB disease resistance. The map was constructed using the data of 227 molecular markers AFLP, RFLP and SSR on the 180 F...     »