Genetics and histology of powdery mildew resistance in apple

S. S. Korban, S. E. Riemer

Research output: Contribution to journalArticlepeer-review


Eight scab-resistant cultivars and selections along with eight commercial apple cultivars were evaluated for powdery mildew resistance in greenhouse and nursery tests. 'Dayton', 'Liberty', Delicious' and 'Tolman Sweet' were rated moderately resistant to infection in both greenhouse and nursery tests. Segregation of seedlings among 14 progenies for mildew reaction indicated that mildew resistance is polygenically controlled in this material with additive gene effects. Recovery of mildew resistant seedlings from crosses involving a scab-resistant parent(s) suggested that this material can be useful in developing scab- and mildew-resistant apple cultivars. Histological investigations were conducted to describe mildew symptoms of infected leaves.

Original languageEnglish (US)
Pages (from-to)261-267
Number of pages7
Issue number3
StatePublished - Jul 1990


  • Malus X domestica
  • Podosphaera leucotricha
  • apple
  • disease resistance
  • fruit breeding
  • inheritance
  • powdery mildew

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Genetics
  • Plant Science
  • Horticulture


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