Resistance in Lycopersicon species to black leaf mold caused by Pseudocercospora Fuligena

G. L. Hartman, T. C. Wang

Research output: Contribution to journalArticle


Over 540 accessions of wild Lycopersicon species or their crosses with L. esculentum were screened for resistance in a series of trials. Forty-six accessions were selected for the final screening trial based on lower disease ratings in previous trials. Of these, L. hirsutum had the greatest number of resistant accessions, followed by L. esculentum and L. peruvianum. Twenty accessions were quantified for their levels of resistance based on leaf area infected, area under disease progress curve (AUDPC), and the degree of sporulation. There was a significant positive correlation between the AUDPC calculated from 20 accessions evaluated under growth room and field conditions. Five L. hirsutum accessions had no sporulation associated with leaf lesions, whereas L. esculentum accessions had an average of 1.6×104 conidia/cm2 of leaf tissue. There was significant positive correlation between the AUDPC values and the number of conidia per cm2 of leaf tissue.

Original languageEnglish (US)
Pages (from-to)125-130
Number of pages6
Issue number1-2
StatePublished - Jan 1 1993
Externally publishedYes



  • Lycopersicon species
  • Pseudocercospora Fuligena
  • black leaf mold
  • epidemiology
  • host resistance
  • tomato

ASJC Scopus subject areas

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

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