Identification of QTLs conferring resistance to scald (Rhynchosporium commune) in the barley nested association mapping population HEB-25.

ABSTRACT:

Background

Barley scald, caused by the fungus Rhynchosporium commune, is distributed worldwide to all barley growing areas especially in cool and humid climates. Scald is an economically important leaf disease resulting in yield losses of up to 40%. To breed resistant cultivars the identification of quantitative trait loci (QTLs) conferring resistance to scald is necessary. Introgressing promising resistance alleles of wild barley is a way to broaden the genetic basis of scald resistance in cultivated barley. Here, we apply nested association mapping (NAM) to map resistance QTLs in the barley NAM population HEB-25, comprising 1420 lines in BC₁S₃ generation, derived from crosses of 25 wild barley accessions with cv. Barke.

Results

In scald infection tria

SUBMITTER: Buttner B 

PROVIDER: S-EPMC7694317 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature