Principal Component and Cluster Analysis as a Tool in the Assessment of Tomato Hybrids and Cultivars

Table 5

Loadings of the traits onto two principal components for hybrids.

Traits	Principal components (PCs)
	1	2
Total fruit yield (g/plant)	0.9169	0.3991
Early fruit yield (g/plant)	0.9565	−0.2917
Polar diameter (cm)	−0.9294	−0.3691
Equatorial diameter (cm)	0.7962	0.6050
Ribbing	0.9996	0.02697
Size of blossom scar	−0.9174	0.3980
Green shoulder	0.5631	0.8264
Intensity of green shoulder	−0.5232	0.8522
Firmness (kg/m^2)	−0.9845	−0.1756
Locule number	0.9996	0.0270
Pericarp thickness (cm)	−0.9968	0.0805
Fruit puffiness	−0.9996	−0.0270
TSS	0.9935	0.1140
TS	0.9999	0.0003
pH	−0.8891	0.4578
Leaf length (cm)	0.8756	0.4830
Leaf width (cm)	0.0380	0.9993
Internode length (cm)	−0.9997	−0.0233
Inbreeding depression of yield	−0.1211	−0.9926
𝑋/s of yield^a	0.9700	−0.2430
Inbreeding depression of early yield	0.4377	−0.8991
𝑋/s of early yield^a	0.4801	−0.8772

^aStability of performance (𝑋/s).