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. 2018 Mar 6;9:287. doi: 10.3389/fpls.2018.00287

Table 1.

Bean mass (of 100 beans), density, and yield (bean mass/fruit mass, %) of coffee beans from C. arabica cv. Icatu collected at 25°C, and within the ranges of 30–35 and 36–40°C (diurnal temperatures).

Diurnal temperature at bean harvest
Parameter [CO2] (μL L-1) 25°C 30–35°C 36–40°C
Mass of 100 beans (g) 380 9.57 ± 1.06 aA 7.17 ± 1.00 abA 5.23 ± 1.00 bA
700 10.31 ± 0.76 aA 8.02 ± 0.79 abA 6.38 ± 0.56 bA
Density (g mL-1) 380 0.686 ± 0.001 bA 0.688 ± 0.001 bA 0.754 ± 0.001 aA
700 0.654 ± 0.001 aA 0.654 ± 0.018 aA 0.700 ± 0.011 aB
Yield (%) 380 15.99 ± 0.79 aA 12.47 ± 0.83 bA 11.91 ± 1.05 bA
700 16.26 ± 1.11 aA 13.94 ± 1.03 abA 12.10 ± 0.78 bA

For each parameter, the mean values ± SE (n = 5–6, performing two replicates of five to six plants) followed by different statistical indexes express significant differences between temperatures for the same CO2 treatment (a, b), or between CO2 treatments within each temperature (A, B). Two-way ANOVA depicted significant changes for temperature, but not for [CO2] conditions or the interaction for all parameters.