Evaluation of Postharvest Quality of Three Commercial Blueberry (Vaccinium corymbosum) Cultivars Stored in Two Different Types of Clamshells

Figures & data

TABLE 1 Analysis of Variance of Weight Change, Berry Size, Firmness, and Soluble Solids Affected by Cultivars, Storage Temperatures, and Clamshell Types in a Complete Factorial Design

Effects	DF	Mean weight	Weight difference	Berry weight	Berry size	Firmness	Soluble solids
Cultivar	2	ns	*	*	ns	*	*
Clamshell	1	*	*	*	*	*	*
Temperature	1	*	*	ns	ns	*	ns
Cultivar * Clamshell	2	ns	ns	*	*	ns	ns
Cultivar * Temperature	2	*	*	*	*	ns	ns
Clamshell * Temperature	1	*	*	ns	ns	ns	ns
Cultivar * Clamshell * Temperature	2	*	*	ns	ns	*	*
*Significant at p < 0.05; ns: not significant.

FIGURE 1 Berry firmness of ‘Duke, ‘Bluecrop’, and ‘Elliott’ blueberries affected by commercial and moisture efficient clamshells over every 3–5 days sampling. Graphs in the left column indicate cold temperature storage, while graphs in the right column indicate room temperature storage. Error bars indicate the standard error of means (color figure available online).

FIGURE 2 Weight difference of ‘Duke, ‘Bluecrop’, and ‘Elliott’ blueberries affected by commercial and moisture efficient clamshells over every 3–5 days sampling. Graphs in the left column indicate cold temperature storage, while graphs in the right column indicate room temperature storage. Error bars indicate the standard error of means (color figure available online).

TABLE 2 Mean Fruit Weight, Berry Size, and Soluble Solids of ‘Duke’, ‘Bluecrop’, and ‘Elliott’ Affected by Commercial vs. Moisture Efficient Clamshells Stored at cold and Root Temperatures

	Mean weight (g/clamshell)	Berry weight (g/ea.)	Berry size (mm)	Soluble solids (%)
Cultivar * Clamshell-type
Duke
Moisture efficient ^z	429.59 a	1.39 a	17.37 a	16.22 a
Commercial	418.30 b	1.32 b	13.86 b	16.50 a
Bluecrop
Moisture efficient	417.67 a	1.75 a	18.62 a	14.70 a
Commercial	411.04 b	1.63 b	16.82 a	15.26 b
Elliott
Moisture efficient	441.07 a	1.63 a	15.28 a	14.20 a
Commercial	435.89 b	1.65 a	15.23 a	14.70 a
Cultivar * Temperature
Duke
Cold ^z	420.76 a	1.46 a	15.82 a	16.49 a
Room	431.90 b	1.04 b	15.00 a	15.99 b
Bluecrop
Cold	406.63 a	1.78 a	18.77 a	15.18 a
Room	433.68 b	1.43 b	14.57 b	14.38 b
Elliott
Cold	437.63 a	1.64 a	15.14 a	14.29 a
Room	440.17 b	1.65 a	15.53 a	14.85 a
^zSame lower case letters between clamshell types and storage temperatures with a column are not significantly different determined by simple t-test (p < 0.05).