Figure 4. Clustering dendrograms for the locations of the 6440 DEGs and the 169 susceptible crucial drought responsive DEGs on its 19 pairs of chromosomes.

(a) Case for the 6440 DEGs. (b) Case for the 169 crucial DEGs. For completeness, we also considered the DEGs without known chromosome locations, that is, with chromosome labels Ann, Cnn and Unn. The Pearson correlation coefficients and the average linkage method⁷¹ are used during the hierarchical clustering processes.