High-resolution mapping of Ryd4^Hb, a major resistance gene to Barley yellow dwarf virus from Hordeum bulbosum.

ABSTRACT:

Key message

We mapped Ryd4^Hb in a 66.5 kbp interval in barley and dissociated it from a sublethality factor. These results will enable a targeted selection of the resistance in barley breeding. Virus diseases are causing high yield losses in crops worldwide. The Barley yellow dwarf virus (BYDV) complex is responsible for one of the most widespread and economically important viral diseases of cereals. While no gene conferring complete resistance (immunity) has been uncovered in the primary gene pool of barley, sources of resistance were searched and identified in the wild relative Hordeum bulbosum, representing the secondary gene pool of barley. One such locus, Ryd4^Hb, has been previously introgressed into barley, and was allocated to chromosome 3H, but is tigh

SUBMITTER: Pidon H 

PROVIDER: S-EPMC10896957 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature