Table 1 Correlations between the first four principal component (PC) scores and each trait
Parameter | PC1 | PC2 | PC3 | PC4 |
|---|---|---|---|---|
Eigenvalue (λ) | 5.79 | 2.45 | 1.59 | 0.86 |
% of total variation | 48.4 | 20.5 | 13.3 | 7.2 |
Flower morphological traits | ||||
Upper petal width | 0.77 | −0.40 | −0.18 | 0.27 |
Lower petal width | 0.82 | −0.36 | −0.17 | 0.29 |
Corolla width | 0.81 | −0.14 | −0.10 | 0.08 |
Corolla height | 0.75 | −0.37 | −0.18 | 0.36 |
Corolla length | 0.90 | −0.16 | −0.01 | −0.30 |
Pistil length | 0.83 | −0.10 | −0.06 | −0.38 |
Stamen length | 0.77 | −0.11 | −0.03 | −0.54 |
Leaf physiological trait | ||||
Concentration of chlorophyll a | 0.51 | 0.83 | −0.13 | 0.07 |
Concentration of chlorophyll b | 0.53 | 0.78 | −0.11 | 0.12 |
Concentration of carotenoids | 0.51 | 0.81 | −0.17 | 0.07 |
Leaf size | ||||
Maximum leaf length | 0.43 | 0.07 | 0.86 | 0.10 |
Maximum leaf width | 0.48 | 0.05 | 0.83 | 0.09 |
