Fig. 2

Cumulative growth rate (CGR) and cumulative drought stress response indices of growth rate (DSRI-GR) of 24 shoot and root growth traits of six cotton genotypes, including two genotypes of each three species, one drought-tolerant and one drought susceptible genotype grown in hydroponic conditions under non-stress (NS) PEG-induced drought stress (DS) conditions. a CGR comparison of six genotypes; b proportional comparison of DSRI-GR of six cotton genotypes; c Heatmap of CGR and GR for all traits. Mean values of all traits have given in (Supplementary Table 4). Here SL, shoot length; SD, stem diameter; LT, leaf temperature; ChC, chlorophyll contents (SPAD); ChA, chlorophyll A; ChB chlorophyll B; ChT, total chlorophyll; A/B, chlorophyll A/B ratio; BC, β-carotenoids, PC, proline contents; RL, root length; ARA, analyzed region area; ARW analyzed region width; ARH, analyzed region height; SA surface area; LPA, root length per area; AD average diameter; RV, root volume; RH, root heigh; RN, root number; RF, root forks; RC root crosses; RW root weight; R/S, root to shoot ratio; D3, three days after stress; D6, 6 days after stress