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Table 3 Mean value, variance components and heritability for sugar content traits of the 97103 × PI 296341-FR watermelon RIL population in two years

From: An integrated genetic map based on four mapping populations and quantitative trait loci associated with economically important traits in watermelon (Citrullus lanatus)

Traits Env Parental lines RILs Parameter
   97103 PI296341 Mean Min Max Genotype (G) GEI h2% 95% CI on h2
Brix 2010 11.0 0.8 3.45 0.50 8.80 3.42 ± 0.49** 0.12 ± 0.03** 96.94 95.47–97.93
  2012 10.2 1.3 3.46 0.58 8.60
Fructose 2010 30.0 4.0 15.32 1.57 40.19 63.98 ± 10.00** 11.92 ± 2.17** 89.21 84.06–92.70
  2012 32.5 3.9 18.51 5.92 43.47
Glucose 2010 17.5 2.0 9.65 1.05 28.08 24.11 ± 3.94** 5.87 ± 1.14** 85.7 78.87–90.32
  2012 20.0 1.5 12.42 2.85 29.62
Sucrose 2010 45.2 0.4 1.97 0.08 20.50 4.79 ± 1.09** 3.35 ± 0.75** 64.59 47.68–76.03
  2012 40.2 0.1 0.94 0.10 15.56
  1. *, **indicate significance at P < 0.05 and 0.01, respectively. GEI: Genotype by Environment Interaction; CI: confidence intervals. The unit of Brix is degress and unit of fructose, glucose and sucrose content is milligram per gram fresh fruit.