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Table 5 An overview of population features of phenotyping data for each trait

From: A dense SNP genetic map constructed using restriction site-associated DNA sequencing enables detection of QTLs controlling apple fruit quality

Trait Year Maximum Minimum Mean(±SD) Distribution
Fruit weight (g) 2008 253.80 56.80 128.77 (±30.33) non normal
2009 205.60 50.00 104.55 (±23.67) non normal
2010 193.60 52.00 110.94 (±26.64) non normal
2011 170.00 33.00 81.30 (±30.36) non normal
Firmness (kg cm−2) 2010 15.67 3.84 8.78 (±1.81) non normal
2011 12.16 5.49 8.71 (±1.39) normal
acidity total acid 2011 11.547 2.118 6.887 (±2.285) normal
(mg g−1) malic acid 2011 11.211 1.653 6.452 (±2.322) normal
  citric acid 2011 0.200 0.016 0.081 (±0.039) normal
  tartaric acid 2011 0.310 0.010 0.109 (±0.056) non normal
  oxalic acid 2011 0.099 0.048 0.070 (±0.011) normal
  acetic acid 2011 1.021 0.000 0.169 (±0.214) non normal
  succinic acid 2011 0.027 0.000 0.006 (±0.004) non normal
sugar content total sugar 2011 127.175 79.564 104.737 (±10.811) normal
(mg g−1) fructose 2011 68.477 33.302 51.014 (±6.854) normal
  glucose 2011 35.065 9.239 19.690 (±6.176) non normal
  sucrose 2011 61.584 11.059 34.033 (±9.765) normal
  1. Fruit weight were measured over 4 years, fruit firmness were determined over 2 years, whereas fruit acidity and sugar content were analyzed only in 2011. Each trait values were obtained from six fruits per n seedlings (n = 1170, 2008; n = 952, 2009; n = 527, 2010; n = 106; 2011). Distributions were calculated using Shapiro-Wilk test