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Figure 1. 

Tomato accession diversity of leaf and fruit morphology within each distinct cluster. Each accession's leaf and fruit are accompanied by the accession name.

Figure 2. 

Correlogram showing the relationship between average values of agronomic and physico-chemical traits of tomato accessions. Dark blue denotes a high negative correlation, whereas dark red represents a high positive correlation. The cell value denotes correlation coefficient (r) values. NOB = number of branches, DTF = number of days to flowering (d), DTM = number of days to maturity (d), FL = fruit length (cm), FWD = fruit width (cm), FPC = number of fruits per cluster, NFPC = number of flowers per cluster, PLTHT = plant height (cm), TFW = total fruit weight per plot (kg), DTH = number of days to first harvest (d), FPP = number of fruits per plot, VITC = vitamin C (mg 100 g⁻¹), BETAC = β-carotene (mg 100 g⁻¹), LCOP = lycopene (mg 100 g⁻¹), TTA = titratable acidity (%), TSS = total soluble solid (°Brix), pH = fruit juice pH. *,**,*** significant at 0.05, 0.01 and 0.001 probability levels, respectively. ns = nonsignificant.

Figure 3. 

A two-dimensional principal component analysis (PCA) showing the relationships among the 17 agronomic and physico-chemical traits and the 25 tomato accessions and checks evaluated. The first two components, PC1 (37%) and PC2 (16%) explaining the highest variance were plotted on the x-axis and y-axis, respectively. The arrows indicate traits contributing to the respective PCs and the correlation between traits can be determined by the close arrow proximity. NOB = number of branches, DTF = number of days to flowering (d), DTM = number of days to maturity (d), FL = fruit length (cm), FWD = fruit width (cm), FPC = number of fruits per cluster, NFPC = number of flowers per cluster, PHT = plant height (cm), TFW = total fruit weight per plot (kg), DTH = number of days to first harvest (d), FPP = number of fruits per plot, VITC = vitamin C (mg 100 g⁻¹), BETAC = β-carotene (mg 100 g⁻¹), LCOP = lycopene (mg 100 g⁻¹), TTA = titratable acidity (%), TSS = total soluble solid (°Brix), PH = fruit juice pH.

Figure 4. 

Hierarchical clustering and heatmap of tomato accessions and checks based on the scaled values of the measured traits. Each row represents an accessions, and each column indicates a measured trait. Accessions are clustered based on their measured traits, and the traits groups are clustered based on their correlation. The traits that are clustered together have a high positive correlation. Cells with red and blue colours have high and low relative appearances, respectively. NOB = number of branches, DTF = number of days to flowering (d), DTM = number of days to maturity (d), FL = fruit length (cm), FWD = fruit width (cm), FPC = number of fruits per cluster, NFPC = number of flowers per cluster, PHT = plant height (cm), TFW = total fruit weight per plot (kg), DTH = number of days to first harvest (d), FPP = number of fruits per plot, VITC = vitamin C (mg 100 g⁻¹), BETAC = β-carotene (mg 100 g⁻¹), LCOP = lycopene (mg 100 g⁻¹), TTA = titratable acidity (%), TSS = total soluble solid (°Brix), pH = fruit juice pH.