Ripe and unripe fruits were collected from the tree and brought to the laboratory within 3 hours. To eliminate intraindividual variation and to achieve a representative sample of the scent emitted by fruits of a single individual, two to eight fruits obtained from an individual plant were pooled together as a single sample. Scent was sampled using a semistatic headspace procedure similar to that of Nevo et al. (19). Fruits were placed in a sampling bag (40 cm; Toppits oven bags, Toppits). One end of the bag was tightly closed with a zip tie, and the other was tightened around a Teflon tube on which a chromatoprobe scent trap (39) was mounted. The chromatoprobes contained 1.5 mg of Tenax, 1.5 mg of Carbotrap, and 1.5 mg of Carbosieve III (all from Sigma-Aldrich) trapped between layers of glass wool. Samples were left in the chamber for 30 min, after which the air in the bag was pumped for 1 min onto the trap using a membrane pump at 200 ml/min. Scent was then left to build up for another 1.5 hours, after which the air in the bag was pumped onto the same probe for 10 min. The probe was then stored in a 2-ml glass vial sealed with a Teflon cap and stored at −20°C. Control samples were collected by applying the same procedure with empty bags.

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