Diversity of Depth50 and Width50 among worldwide rice accessions from 2019. (a) Scatter plot of worldwide rice accessions cultivated. Sixty rice accessions were divided into 4 subspecies, namely, japonica, indica, aus, and admixed. (b) Box plot of Depth50 and Width50 among subspecies. The constituents of the box plot are marked as bee swarm points. The letters above the plots indicate a significant difference calculated by the Steel–Dwass test.