Increase in fruit size of a spontaneous mutant of 'Gala' apple (Malus x domestica Borkh.) is facilitated by altered cell production and enhanced cell size.

Abstract excerpt

Fruit size regulation was studied in the apple cultivar 'Gala' and a large fruit size spontaneous mutant of 'Gala', 'Grand Gala' (GG). GG fruits were 15% larger in diameter and 38% heavier than 'Gala' fruits, largely due to an increase in size of the fruit cortex. The mutation in GG altered growth prior to fruit set and during fruit development. Prior to fruit set, the carpel/floral-tube size was enhanced in GG...

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