Germination, seedling vigor and electrical conductivity of seed leachates as affected by dry heat treatment of tomato seeds

M. Farooq*, S. M.A. Basra, B. A. Saleem, M. Nafees

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


Seed dormancy is a major problem in tomato (Lycopersicon esculentum Mill.). Dry heat treatments at 40, 50 or 60°C for 24h were applied to assess their ability to break dormancy and invigorate seeds of four tomato cultivars ('Nagina', 'Pakit', 'Riogrande Improved' and 'Roma'). All the cultivars responded similarly. Dry heat treatments at 40 and 50°C resulted in improved germination and seedling vigor compared to untreated seeds, with the highest vigor observed in seeds treated at 50°C. However, seeds dry heat treated at 60°C behaved similarly in terms of germination and vigor to untreated seeds. In all cultivars, seeds dry heat treated at 50°C resulted in lower electrical conductivity of seed leachates, whereas the leachate conductivity of seeds dry heat treated at 40°C was generally not as low.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on Seed Enhancement and Seedling Production Technology
PublisherInternational Society for Horticultural Science
Number of pages8
ISBN (Print)9789066055018
Publication statusPublished - 2008
Externally publishedYes
EventInternational Symposium on Seed Enhancement and Seedling Production Technology - Seoul, Korea, Republic of
Duration: Aug 13 2006Aug 19 2006

Publication series

NameActa Horticulturae
ISSN (Print)0567-7572


ConferenceInternational Symposium on Seed Enhancement and Seedling Production Technology
Country/TerritoryKorea, Republic of


  • Dry heat
  • Electrical conductivity
  • Germination
  • Seedling vigor
  • Tomato

ASJC Scopus subject areas

  • Horticulture

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