Preharvest temperature affects chilling injury in dessert bananas during storage

BACKGROUND: The effect of temperature on chilling injury during fruit growth was studied in a new banana hybrid CIRAD925 in which seasonal variability in chilling susceptibility was observed when fruits were stored at 13 ∘ C. RESULTS: The relationship between the response to chilling (presence/absence) and the temperature during banana fruit growth was examined with a logistic regression model. An explanatory variable X N,P was defined as the mean temperature during a period, expressed in weeks, which began N week(s) after flowering and lasted P week(s). The model was calibrated with 143 bunches with a green life of 30 ± 5 days and validated with 156 bunches grown in six plots under different growing conditions. Chilling injury was best predicted by the mean temperature during the period beginning 1 week after flowering and lasting 5 weeks (X 1,5 ). Above a mean temperature of 24.1 ∘ C in the period concerned, banana fruits had a 95% probability of chilling injury at 13 ∘ C. Below a temperature of 23.4 ∘ C, banana fruits only had a 5% probability of chilling injury. CONCLUSION: The results provide a tool to predict chilling susceptibility in banana fruit whatever the thermal conditions in tropical regions.

Bibliographic Details

Main Authors:	Bugaud, Christophe, Joannès-Dumec, Charlène, Louisor, Jacques, Tixier, Philippe, Salmon, Frédéric
Format:	article biblioteca
Language:	eng
Published:	Wiley
Subjects:	F62 - Physiologie végétale - Croissance et développement, J11 - Manutention, transport, stockage et conservation des produits d'origine végétale, Musa, banane, température, récolte, stockage au froid, date de récolte, modèle mathématique, croissance, stress dû au froid, http://aims.fao.org/aos/agrovoc/c_4993, http://aims.fao.org/aos/agrovoc/c_806, http://aims.fao.org/aos/agrovoc/c_7657, http://aims.fao.org/aos/agrovoc/c_3500, http://aims.fao.org/aos/agrovoc/c_6484, http://aims.fao.org/aos/agrovoc/c_29464, http://aims.fao.org/aos/agrovoc/c_24199, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_37531,
Online Access:	http://agritrop.cirad.fr/577343/ http://agritrop.cirad.fr/577343/7/577343.pdf
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