Fig. 6

The principal component analysis (PCA) of the variable traits of cotton seeds under different treatments. WCK: water-primed seeds germinated in the sand without NaCl; WS: water-primed seeds germinated in the sand containing NaCl; MCS: MC-primed seeds germinated in the sand containing NaCl. FWCK, FWS, FMCS: addition of fluridone based on WCK, WS and MCS. PWCK, PWS, PMCS: addition of 3-mercaptopropionic acid based on WCK, WS and MCS