Representative genotypes showing γ-decalactone stability over a single growing season. 35 out of 130 ‘Elyana’ x ‘Mara des Bois’ progeny produced fruit suitable for volatile analysis over three consecutive harvests. All progeny could be clustered into five classes based on γ-decalactone production as shown by five uniquely shaped graphs below. ‘Mara des Bois’ represents the class of non-producers, with ‘Elyana’ representing those lines that peaked mid-season. Other patters included the inverse of ‘Elyana’ with a “valley” pattern, a strong “decrease” after the earliest harvest, and one progeny that showed an increase as the season progressed. Counts in each category are shown in the attached legend. Data are from two technical replicates from one example genotype per class. Error bars represent standard deviations.