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. 2020 Oct 21;15(10):e0241081. doi: 10.1371/journal.pone.0241081

Table 2. Numbers of different sized and total tubers, biomass, tuber yield, and harvest index of potato plants under different treatment conditions of CO2 and temperature at the final harvest.

Treatment No. tubers (plant-1) Total no. tubers (plant-1) Biomass (g DW plant-1) Yield (g FW plant-1) Harvest Index\
<30 g 30–80 g >80 g Leaf Stem Tuber Tuber Marketable
aCaT 4.8a 2.9b 2.3b 10.2a 10.4b 7.1b 106.4b 502b 273b 0.87ab
eCaT 5.2a 3.9a 2.4b 11.5a 9.8b 6.2b 110.3b 527b 269b 0.89a
aCeT 2.0c 2.8b 1.9c 6.4b 7.6b 6.0b 76.9c 342c 195c 0.84ab
eCeT 3.9b 4.1a 2.9a 10.8a 14.4a 9.3a 127.5a 604a 352a 0.82b
ANOVA
CO2 *** ** *** *** *** * *** *** *** ns
Temp *** ns Ns ** ** Ns ** * Ns **
CO2 × Temp *** ns *** ** *** *** *** *** *** ns

Means followed by the same letters in each column are not significantly different at P < 0.05 according to Tukey’s test.

*Significant at the 0.05 probability level;

** Significant at the 0.01 probability level;

***Significant at the 0.001 probability level;

NS—not significant; Tuber size: <30 g Small, 30–80 g Medium, >80 g Large; Marketable: weight > 80 g; Harvest index: tuber dry weight / total dry weight; Temp: Temperature.