Figure 4

Bi-plot of principal components based on mean value of yield, yield attributes secondary metabolites profile and Chl data. Factor 1 and Factor 2 explain 65.51, 77.43 and 83.54 % of the data variation for CSIR-IHBT, RHRS and PAU, respectively. Figure a, c and e are the variable vector distributions; Figure b, d and f are the case distributions (treatment combinations). The loading values of variables are presented (a, c and e) as vectors in the space of the PCA bi-plots. N₁, N₂ and N₃ are the level of nitrogen @ 30, 60 and 90 kg ha⁻¹, respectively. P₁ and P₂ are the level of phosphorus @ 20 and 40 kg ha⁻¹, respectively, while K₁, K₂ and K₃ are representing the level of potassium @ 20, 40 and 60 kg ha⁻¹, respectively.