Fig. 2

Assessment of differential catechins content and correlation analysis in core collections of Gossypium. A The contents of catechin in Shixiya1, Hai7124 and TM-1 measured by HPLC. B Distribution of the catechin content in three cotton species (G. arboreum, G. barbadense, and G. hirsutum) C Frequency distribution of phenotypic variation of catechin and oil-related traits, and correlation analysis in core collections of G. hirsutum. Myristic acid (C14:0); Palmitic acid (C16:0); Stearic acid (C18:0); Oleic acid (C18:1); Linoleic acid (C18:2); Cyclopropene fatty acid (C19:1); Linolenic acid (C18:3); Arachidic acid (C20:0) and Total fatty acids (Total FAs). Columns show the mean ± SD with three replicates. *, **, *** represent P < 0.05, P < 0.01, and P < 0.001, respectively