Identification and chromosomal location of major genes for resistance to Pyrenophora teres in a doubled-haploid barley population

T. L. Friesen, J. D. Faris, Z. Lai, B. J. Steffenson

Research output: Contribution to journalArticlepeer-review

58 Scopus citations

Abstract

Net blotch, caused by Pyrenophora leres, is one of the most economically important diseases of barley worldwide. Here, we used a barley doubled-haploid population derived from the lines SM89010 and Q21861 to identify major quantitative trait loci (QTLs) associated with seedling resistance to P. teres f. teres (net-type net blotch (NTNB)) and P. teres f. maculata (spot-type net blotch (STNB)). A map consisting of simple sequence repeat (SSR) and amplified fragment length polymorphism (AFLP) markers was used to identify chromosome locations of resistance loci. Major QTLs for NTNB and STNB resistance were located on chromosomes 6H and 4H, respectively. The 6H locus (NTNB) accounted for as much as 89% of the disease variation, whereas the 4H locus (STNB resistance) accounted for 64%. The markers closely linked to the resistance gene loci will be useful for marker-assisted selection.

Original languageEnglish (US)
Pages (from-to)855-859
Number of pages5
JournalGenome
Volume49
Issue number7
DOIs
StatePublished - Jul 2006

Keywords

  • Disease resistance
  • Drechslera teres
  • Molecular markers

Fingerprint

Dive into the research topics of 'Identification and chromosomal location of major genes for resistance to Pyrenophora teres in a doubled-haploid barley population'. Together they form a unique fingerprint.

Cite this