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2012 - 337 p.

Effects of salicylic acid, jasmonic acid and calcium chloride treatments on reduction of chilling injury in pomegranate fruit

Mirdehghan S.H., Ghotbi F., Dashti H.

The aim of this experiment was to investigate the effects of salicylic acid, jasmonic acid and calcium chloride on reduction of chilling injury in pomegranate fruits cvs. ،Malas Yazdi, and ،Malas Ashkezar,. Salicylic acid (1 and 2 mM from source of acetyl salicylic acid), jasmonic acid (0.3 and 0.4 mM from source of n-propyl dihydrojasmonate), calcium (1 and 2 % from source of calcium chloride) and control (distilled water) were used as treatment. After the treatments fruits were stored in cold storage at 1.5 oC±0.5 and 85±5% relative humidity for 2 months. The results revealed that treatments with salicylic acid (SA), jasmonic acid (JA) and calcium chloride (CaCl2) significantly reduced the percentage of chilling injury of pomegranate fruits. The lowest chilling injury was observed in 0.4 mM of JA-treated fruits and the highest one was for untreated fruits. Treatments of fruits with 0.3 mM JA and 2 mM SA increased the electrolyte leakage of fruits but it was not significantly affected by other treatments. It was also showed that treatments of fruits with SA, JA and CaCl2 had no significant effect on pH, ripening index, but the total soluble solids of fruit juices was increased. The results evidenced that pomegranate fruits treated with 2 mM SA had the lowest ascorbic acid, but it was not significant difference between other treatments and untreated fruits. In conclusion, cultivar of ،Malas Ashkezar, exhibited higher tolerance to cold storage compared to ،Malas Yazdi,, therefore cultivar of ،Malas Ashkezar, recommended to keep in cold storage for long time.

Mots-clés    

ANTIOXYDANT, BRUNISSEMENT ENZYMATIQUE, COMPOSE PHENOLIQUE

Citer cet article    

Mirdehghan S.H., Ghotbi F., Dashti H. Effects of salicylic acid, jasmonic acid and calcium chloride treatments on reduction of chilling injury in pomegranate fruit. In : Melgarejo P. (ed.), Valero D. (ed.). II International Symposium on the Pomegranate. Zaragoza : CIHEAM / Universidad Miguel Hernández, 2012. p. 209-215. (Options Méditerranéennes : Série A. Séminaires Méditerranéens; n. 103). 2. International Symposium on the Pomegranate, 2011/10/19-21, Madrid (Spain). http://om.ciheam.org/om/pdf/a103/00006948.pdf