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Sensibilité des poivrons des cultivars variés aux contraintes thermiques basses en tant que mesurés par la fluorescence de la chlorophylle.

Sensitivity of pepper fruits of different cultivars to low temperature stress as measured by chlorophyll fluorescence

Auteurs : KOSSON R., STEPOWSKA A.

Type d'article : Article

Résumé

The sensitivity to low temperatures of green pepper fruits of 6 cultivars stored at temperature 1, 4 and 8 °C for 18 days, as measured by relative variable chlorophyll fluorescence (Fc/Fm) was studied. Keeping the green pepper fruits at 1 °C resulted in gradual decrease of relative chlorophyll fluorescence. Pepper 'Roxy F1' was characterized by higher Fv/Fm index after 6th day of storage, if compared to other tested cultivars. The first visible chilling injury symptoms appeared after 3 days of storage at 1 °C on the surface of pepper fruits of cv. NieblaF1 and after an additional 3 days at room temperature and also on the fruits of cv. Roxy F1. The highest chilling injury index was noticed for fruits of cv. Niebla F1. It was found that pepper cultivars Barbadillo F1 and Wilanko F1 were more resistant to chilling than others. The relative chlorophyll fluorescence Fv/Fm was not affected by 4 and 8 °C temperature conditions before the 18th day of storage.

Détails

  • Titre original : Sensitivity of pepper fruits of different cultivars to low temperature stress as measured by chlorophyll fluorescence
  • Identifiant de la fiche : 2005-2040
  • Langues : Anglais
  • Source : Veg. Crops Res. Bull. - vol. 60
  • Date d'édition : 2004

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