Fig. 2
Correlation coefficients among cotton yield, yield components, and fiber quality traits evaluated for parents and F1 hybrids. Positive correlations are marked in green and negative correlations are marked in red. The intensity of the color is proportional to the correlation coefficients. The color gradient legends represent  correlation coefficients (r) values ranging from + 1.0 (dark green) to − 1.0 (dark red). *, **, and *** indicate significant correlations at P ≤ 0.05, P ≤ 0.01, and P ≤ 0.001, respectively. LCY, lint cotton yield per plant; SCY, seed cotton yield per plant; SI, seed index; BW, boll weight; NBP, number of bolls per plant; LP, lint percentage; LI, lint index; NSB, number of seeds per boll; MIC, micronaire; FS, fiber strength; FL, fiber length; FUR, fiber uniformity ratio