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. 2000 Mar;66(3):1077–1083. doi: 10.1128/aem.66.3.1077-1083.2000

TABLE 3.

Summary of ANOVA comparing cultivar groupings for pH and °Brix

Variable Comparative grouping characteristics
ANOVA dataa
Tissueb Sourcec Typed Apple cultivarse Variation df MS F Fcrit
pH Undamaged TP Fresh GD, Mc, Ma, and Me Between cultivars 3 0.024 0.57 2.74
Within cultivars 68 0.041
TP Stored GD, Mc, Ma, and Me Between cultivars 3 0.052 2.27 4.07
Within cultivars 8 0.023
D Fresh GD, Mc, and Me Between cultivars 2 0.123 1.93 3.19
Within cultivars 51 0.064
D Stored GD, Mc, Ma, and Me Between cultivars 3 0.033 1.97 4.07
Within cultivars 8 0.017
Bruised TP Fresh GD, Mc, and Me Between cultivars 2 0.077 1.61 3.28
Within cultivars 33 0.048
D Fresh GD, Mc, and Me Between cultivars 2 0.141 1.53 3.28
Within cultivars 33 0.092
°Brix Undamaged TP Fresh Mc, Ma, and Me Between cultivars 2 2.556 2.33 3.28
Within cultivars 33 1.095
TP Stored GD, RD, Mc, Ma, and Me Between cultivars 4 1.795 2.67 5.19
Within cultivars 5 0.673
D Fresh RD, Mc, Ma, and Me Between cultivars 3 0.889 0.63 2.82
Within cultivars 44 1.401
D Stored RD, Mc, Ma, and Me Between cultivars 3 4.411 7.58 9.28
Within cultivars 3 0.582
Bruised TP Fresh Mc, Ma, and Me Between cultivars 2 0.380 0.33 3.28
Within cultivars 33 1.145
TP Stored GD, RD, Mc, Ma, and Me Between cultivars 4 2.127 4.73 5.19
Within cultivars 5 0.450
D Fresh RD, Mc, Ma, and Me Between cultivars 3 1.344 1.01 2.83
Within cultivars 42 1.331
D Stored RD, Mc, Ma, and Me Between cultivars 3 1.535 1.68 6.59
Within cultivars 4 0.913
a

Data showing values for degrees of freedom (df), mean square (MS), F, and Fcrit (value above which the null hypothesis is rejected at the 95% confidence level). 

b

Apples were either healthy (undamaged) or had been dropped onto a tile floor to damage the tissue (bruised). 

c

Harvested either as hand-picked directly from the tree (tree-picked; TP) or obtained from the ground (dropped; D). 

d

Harvested on a weekly basis (4 September to 9 October) and tested within 1 to 2 days of harvest (fresh) or harvested and stored at 4°C for 1 month prior to testing (stored). 

e

RD, Red Delicious; GD, Golden Delicious; Mc, McIntosh; Ma, Macoun; Me, Melrose.