Fig. 5. Root exudation at the apical and basal root zones of
chickpea genotypes with contrasting drought resistance.
One early flowering (EF) and two late flowering (LF1 and LF2) chickpea
genotypes were evaluated. (a) principal coordinate analysis (PCoA) was
based on the abundance of 34 detected root exudates and Bray-Curtis
distance between samples. (b) three chemical groups of root exudates
influenced by chickpea genotypes and root zones. (c) rhizosphere soil pH
at apical and basal zones of chickpea genotypes. (d) the root exudation
compounds with Log2 fold changes of EF/LF > 1 or
< -1.. The same lowercase letters (uppercase letter for the
total root exudates) indicated no significant differences (P <
0.05) between genotypes based on Tukey HSD post-hoc pairwise comparison
test. * indicated the FDR-adjusted P < 0.01.