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Table 4 Average and variation in different fruit quality attributes in two experiments, for data based on all plants and plants with slips only

From: Selective pruning in pineapple plants as means to reduce heterogeneity in fruit quality

  Average fruit quality Coefficient of variation in fruit quality
All plants Plants with slips All plants Plants with slips
Expt 1 Expt 2 Expt 1 Expt 2 Expt 1 Expt 2 Expt 1 Expt 2
Fruit weight (kg) 0.96 0.91 0.97 0.96 0.26 0.25 0.25 0.23
Pruning time         
2MIE a 0.95 0.93 0.97 0.97 0.27 b h 0.26 0.25 0.23
3MIE b 0.96 0.90 0.97 0.94 0.25 a 0.25 0.24 0.22
Pruning treatments at 2MIE         
NP c 0.95 0.96 0.97 1.01 0.26 0.25 0.25 0.22 b
1/3P d 0.97 0.85 0.99 0.91 0.26 0.27 0.25 0.22 b
2/3P e 0.96 0.93 0.98 0.96 0.27 0.26 0.26 0.23 b
AP f 0.91 0.98 0.96 1.01 0.28 0.26 0.26 0.24 b
Pruning treatments at 3MIE         
NP 0.95 0.85 0.96 0.88 0.24 0.26 0.23 0.24 b
1/3P 0.96 0.90 0.97 0.94 0.26 0.24 0.25 0.22 b
2/3P 0.94 0.93 0.95 0.98 0.25 0.23 0.25 0.19 a
AP 1.01 0.92 1.02 0.96 0.24 0.26 0.23 0.22 b
Infructescence weight (kg) 0.86 0.77 0.88 0.81 0.29 0.30 0.27 0.26
Pruning treatments at 2MIE         
NP 0.85 0.81 0.88 0.86 0.29 0.30 0.28 0.26 ab
1/3P 0.87 0.71 0.88 0.76 0.29 0.31 0.27 0.25 ab
2/3P 0.86 0.77 0.88 0.80 0.29 0.31 0.29 0.28 b
AP 0.81 0.83 0.85 0.86 0.31 0.29 0.28 0.27 b
Pruning treatments at 3MIE         
NP 0.85 0.71 0.87 0.74 0.26 0.31 0.25 0.28 b
1/3P 0.86 0.77 0.87 0.80 0.29 0.28 0.28 0.26 ab
2/3P 0.85 0.79 0.85 0.84 0.29 0.27 0.28 0.23 a
AP 0.92 0.78 0.92 0.81 0.26 0.30 0.26 0.27 b
Crown weight (kg) 0.10 0.14 0.10 0.15 0.19 0.19 0.18 0.18
Pruning time         
2MIE 0.099 b 0.148 0.100 b 0.151 0.20 0.19 0.19 0.18
3MIE 0.095 a 0.141 0.095 a 0.143 0.17 0.19 0.17 0.18
Fruit length (cm) 30.89 36.35 31.14 36.94 0.10 0.10 0.08 0.08
Pruning time         
2MIE 30.80 36.44 31.19 37.04 0.09 0.09 0.09 b 0.08
3MIE 30.98 36.26 31.10 36.83 0.08 0.09 0.08 a 0.08
Infructescence length (cm) 15.27 15.66 15.45 16.03 0.16 0.15 0.15 0.14
Crown length (cm) 15.63 20.70 15.70 20.91 0.11 0.14 0.11 0.13
Pruning treatments         
NP 15.60 20.74 15.65 20.99 0.10 a 0.14 0.10 0.13
1/3P 15.56 20.53 15.62 20.84 0.12 b 0.14 0.12 0.13
2/3P 15.78 21.14 15.85 21.27 0.12 b 0.13 0.11 0.12
AP 15.56 20.35 15.64 20.52 0.11 ab 0.13 0.11 0.13
Ratiog 1.06 1.36 1.05 1.34 0.21 0.22 0.21 0.21
Total soluble solids (°Brix) 13.79 15.00 13.80 15.12 0.06 0.09 0.06 0.08
Juice pH 4.04 3.81 4.05 3.84 0.03 0.05 0.04 0.05
Pruning treatments         
NP 4.00 ab 3.81 4.01 ab 3.83 0.03 0.05 0.03 0.04
1/3P 4.08 bc 3.80 4.08 bc 3.82 0.03 0.05 0.03 0.04
2/3P 4.12 c 3.80 4.12 c 3.82 0.03 0.06 0.04 0.05
AP 3.96 a 3.85 3.97 a 3.88 0.04 0.06 0.04 0.05
Flesh translucency 17 26 17 30 1.44 1.19 1.39 1.09
  1. a: 2 months after inflorescence emergence; b: 3 months after inflorescence emergence; c: No slips pruned on the plants; d: Slips pruned on the one-third plants with the smallest infructescences; e: Slips pruned on the two-thirds plants with the smallest infructescences; f: Slips pruned on all plants; g: ratio crown length: infructescence length.
  2. h: Values followed by the same letters in the same columns for each quality attribute, are not significantly different based on LSD (0.05). Lines in regular font type indicate the grand means for each quality attribute.
  3. Individual treatment means are shown in italic font type for quality attributes in which the effects of pruning time, pruning treatment or their interaction were significant in one of the data sets or experiments.
  4. Values in bold indicate the means in which effects were significant.