Fig. 4

Principal component analysis (PCA) showing biplot (score and loading) of the parents (lines and testers) and hybrids based on yield, yield components and fiber quality traits. 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. The total variation was divided into 12 principal components (PCs). The loadings for 12 studied cotton traits on PC1 and PC2 are represented by the green arrows. Score plot for the 27 cotton genotypes (parents and hybrids) are shown on the plot in blue color