Open AccessLinkage relationships of ten powdery mildew resistance genes on barley chromosome 5
Author(s) -
GIESE H.,
JØRGENSEN J. HELMS,
JENSEN H. P.,
JENSEN J.
Publication year - 1981
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1981.tb01327.x
Subject(s) - powdery mildew , biology , gene , locus (genetics) , genetics , genetic linkage , chromosome , recombination , botany
The linkage relationships between 10 powdery mildew resistance genes positioned in or closely linked to, Ml‐a or Ml‐k loci on barley chromosome 5 were examined. No recombination was obtained between the Ml‐a genes examined. The genes Ml‐a(Ar) and Ml‐a(Rul) were shown to be different from the 11 previously identified Ml‐a genes and it is proposed that they be called Ml‐a12 and Ml‐a13 respectively. An additional gene was discovered in barley line ‘Is0 20R’ and is named Ml‐a14 . The gene symbols Ml‐k and Ml‐a4 appear to represent an identical gene in the Ml‐k locus and it is suggested that only the symbol Ml‐k be used in future. The gene Ml‐(Ru2) was found to be inherited independently of the genes Ml‐a and Ml‐k . Linkage estimates between gene Ml‐k and seven Ml‐a genes ranged from 5.4 to 10.6 per cent recombination.