Fig. 1

Characterization of a drought-sensitive CSSL. a Flowchart of the CSSL construction and drought-sensitive CSSL identification. b Drought stress phenotype of PR403, Lambayeque 1, and PY6. c Survival rate of PR403, Lambayeque 1, and PY6 after drought stress treatment. The different letters at the top of each column indicate statistically significant differences based on ANOVA with Tukey’s HSD test (P < 0.05). d Relative water content of leaves of PR403 and PY6 under drought stress treatment. The data are presented as the means ± SDs (n = 3; *, P < 0.05; **, P < 0.01; Student’s t test). e Fine mapping of the QTL dss-1 underlying the drought-sensitive phenotype of PY6. Scale bar = 5 cm in (b)