Fig. 5

Population structure and phylogenetic relationship analysis based on 48 InDel markers. a Estimation of the optimal group number through ΔK, the number of K was set from 2 to 9. b Q-plot of the population structure when K = 2. Each tea cultivar is represented by a horizontal bar. c The dendrogram was constructed based on genotypes using neighbor-joining algorithm with 1000 bootstrap replicates