Figure 2

PAM and PCA analyses for data exploration. (a–c) Show two clusters of PAM of 2014 white rice, 2015-early white rice, and 2015-late white rice, respectively. (d–f) Show PCA biplots of 2014 white rice, 2015-early white rice, and 2015-late white rice, respectively. (a) 1–30: white rice from Korea, 31–60: white rice from China. (b) 1–20: white rice from Korea, 21:40: white rice from China. (c) 1–13: white rice from Korea, 14–26: white rice from China.