two PLS factors (F1, F2) were suf- ficient for the PLS model between the X and Y matrices of ‘Nam Dokmai #4’ fruit. F1 mainly referred to the harvest maturity variables, F2 chiefly to the storage time (D) (Table 6). In view of VIP levels ≥0.95 (Table 6), storage time (R2 F2x = 85%), h ◦ m (R2 F1x = 79%), and TA (R2 F1x = 78%) were the most essential independent variables of the PLS model (R2
F1x+F2x ≥ 82%). Unlike the three key attributes identified by PCA for fruit one day after harvest (Fig. 1F), chlorophyll b was less important, similar to TSS and DM (VIP = 0.75–0.84; R2 F1x+F2x = 57–68%; Table 6) (Wold, 1995)