2.7. Statistics
Analysis of the data from the storage of partially ripened fruit in Test 1A was accomplished by one-way ANOVA within storage treatment and duration across the three harvest dates and three orchards using SPSS (SPSS, Chicago, IL, USA). An alternative one-way ANOVA (SPSS) was performed within ripening treatment and across storage temperatures and times to assess the relative effects of these treatments. One-way ANOVA (SPSS) was also used to examine the effect of storage duration prior to ripening in that portion of Test 1B by performing the analysis within each of the ripening times across the three harvest dates and three orchards. An additional analysis was conducted for the attribute pink staining to examine harvest date and orchard effects using a general linear model in SPSS. A separate one-way ANOVA examined the effect of ripening time within each of the storage duration treatments prior to ripening. Tukey’s test was used to perform all mean separations at P ≤ 0.05. Means were based upon 135 fruit for the partial ripening portion of the testing and upon 120 fruit for the post-storage ripening. For the data from Test 2 an analysis using a general linear model with harvest date, ripening treatment and storage time as fixed effects was conducted using SPSS for both quality and sensory attributes. The mean for each quality factor within a treatment and harvest date was based upon 35 fruit for each harvest. For the sensory evaluation, means were based upon 12 fruit per treatment for each harvest date, with each fruit being tasted by 10 panelists. Since an analysis indicated that storage time had a statistically-significant effect on both quality and sensory attributes, separate analyses were conducted for each of the two storage times using harvest date and ripening treatment as the fixed effects. Mean comparisons among harvest dates or ripening treatments within a storage time were performed using Tukey’s test. The significant interaction of harvest date and ripening treatment for the sensory attribute ‘creamy’ was further examined by performing a one-way analysis using SPSS for the effect of ripening treatment for each of the harvest dates for each storage at each of the two storage times. The effect of harvest date on average fruit weight and dry weight were analyzed with a one-way analysis of variance, using Tukey’s test to perform the mean separations, the means being the average of 10 individual fruit.