Fig. 6
From: Image analysis for the automatic phenotyping of Orobanche cumana tubercles on sunflower roots
Use of RhizOSun with 5 sunflower genotypes and 2 races of O. cumana. a Distribution of the number of tubercles/rhizotron (by automatic counting) for each genotype (2 to 5 rhizotrons)/race, Bourret shown as gray bars and KZP shown as orange bars. The letters a-b-c refer to three groups of genotypes that differ significantly (two-way ANOVA: p < 0.001). b Correlation between manual counting (x axis) and automatic counting (y axis, R2 = 0.94) of the number of tubercles (each genotype is represented in a different color: 2603 = green, BR3 = orange, LC1093 = gray, MSL1 = yellow, MSL2 = blue). The macroparameters HSB and size of particles are similar to the macro used in Fig. 4. The crop size was reduced (compared to the macro used in Fig. 4) to adapt to this batch of images