Identifying lint properties of some cotton genotypes (Gossipum hirsutum L.) using different statistical models

The study was conducted to compare between nine cottonseed genotypes ( Gossipum hirsutum L) which included, two local Iraqi genotypes Coker 310 and Lachata (which originating from America and Spanish and recorded in Iraq) and three of the Bakhtegan, Khordad, Varamin genotypes are from Iran, and four of them Cafko, Dunn 1047, Montana, Stoneville genotypes are from America (USA) which aimed to identify yield components and fiber quality properties. The field experiment was designed with randomised complete block design using three replicates in Grdmal village, south Erbil, which is 30 km far from centre of Erbil, Iraq. Statistical analysis of the traits shown significant differences among the nine cotton genotypes, significantly maximum fiber strength, fiber elongation and protein yield (33.20 (g tex -1 ), 6.80 % and 118.27) were recorded by the first Iraq’s genotype Lachata. Highest values of fitness and fibre weight plant -1 (4.70 microner and 6.64 g) were recorded from Bakhtegan Iran’s genotype. Maximum value for uniformity (85.10 %) was also recorded by Khdorda Iran’s genotype. From the principal component analysis (PCA) shows the angle value between each of the two variables elongation, uniformity and strength is ≤ 90 º it means there was significant correlation between them and