*3.3. Correlation*

Correlation (Figure 3) was observed by OriginPro 8.5 software and it was observed that plant height showed a positive correlation with the number of fruiting branches per plant, total number of nodes, size of petiole and balls, length of bracts, length of petals, and length of pistil but it had no correlation with total number of flowers, whereas plant height was negatively correlated with total number of nodes, first sympodial node height, sympodial nose number bearing first effective boll, sympodia node height, bearing last effective boll, cell injury, total number of sympods, length of staminal column, and proline content. Fully dehiscent anther had a positive correlation with sympodial node number, percent boll set on first position, percent boll set on second position along sympodia, total number of sympods, total number of nodes, size of petiole, boll number, total number of bolls, and length of bract. Hence, the length of petiole, proline contents, sympodial node number, percent boll set on first and second position along sympodia, total number of nodes, size of petiole, branch number, total number of bolls, length of bract, and length of petiol were all positively correlated with each other and a significant effect was observed among the traits.

**Figure 3.** Pearson correlation among phenotypic traits of cotton under heat stress (= + ve = - ve).