Table 1.

Summary of results from the three software programs. Coefficient of determination (R²) obtained from simple linear regression from projected leaf area (PA) from each software programs and the dry weight of the plants. R² of relative growth rate is obtained by regression of dry weight RGR (RGR_DW) and the projected area RGR (RGR_PA).

	10 days	20 days	R 2 of relative growth rate
HTPheno	0.90	0.94	0.90
PlantCV	0.88	0.91	0.89
EasyLeafArea	0.81	0.91	0.86