Distribution of Actinidia ESTs involved in postharvest kiwifruit softening. Schematic representation of postharvest kiwifruit softening in relation to the timing of key events in the softening process of ethylene-treated 'Hayward' fruit. Diagram modified from ). Previously published sequences in GenBank involved in postharvest softening processes were used to identify genes in the Actinidia EST database using BLAST searches. The first number in each set of brackets represents the total number of ESTs found in the Actinidia database and the second number is the number of ESTs found in fruit libraries.