Linkage analysis of genes for resistance to downy mildew (Bremia lactucae) in lettuce (Lactuca sativa)

S. H. Hulbert, Richard W Michelmore

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The genetics of specific resistance was studied in F2 populations which segregated for either one or two resistance genes. The resistance factors 1, 11 and 14 which had not previously been characterized genetically segregated as single dominant genes (Dm). Resistance was determined by three linkage groups; R 1/14, 2, 3, and 6 in the first, R 5/8, and 10 in the second and R 4, 7 and 11 in the third. Cultivars of lettuce commonly used in the differential series to detect virulence to R3 and R10, were demonstrated to carry two tightly linked resistance genes. Implications of this linkage arrangement to the manipulation and characterization of these resistance genes are discussed.

Original languageEnglish (US)
Pages (from-to)520-528
Number of pages9
JournalTheoretical And Applied Genetics
Volume70
Issue number5
DOIs
StatePublished - Aug 1985

Fingerprint

Bremia lactucae
Lettuce
downy mildew
Lactuca sativa
lettuce
linkage (genetics)
Genes
Dominant Genes
genes
R Factors
dominant genes
linkage groups
Virulence
virulence
cultivars
Population

Keywords

  • Host/parasite interaction
  • Specific resistance

ASJC Scopus subject areas

  • Genetics(clinical)
  • Genetics
  • Plant Science
  • Horticulture
  • Agronomy and Crop Science

Cite this

Linkage analysis of genes for resistance to downy mildew (Bremia lactucae) in lettuce (Lactuca sativa). / Hulbert, S. H.; Michelmore, Richard W.

In: Theoretical And Applied Genetics, Vol. 70, No. 5, 08.1985, p. 520-528.

Research output: Contribution to journalArticle

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