Correlation Analysis of Agronomic, Fiber Traits and AFLP Markers in Hybrid Cotton (Gossypium Hirsutum × Gossypium Barbadense)

Identification of molecular markers associated with quantitative and qualitative traits can facilitate selection for these traits in breeding programs. This study was designed to identify AFLP markers associated with agronomic and fiber traits using an F4 population derived from interspecific cross between Gossypium hirsutum and G. barbadense. Seeds were grown in the field and plants were scored for eleven agronomic and fiber quality traits. Correlation analysis between AFLP markers and traits indicated that 19 and 14 markers were significantly associated positively or negatively with fiber and agronomic traits. Only markers which have been correlated with a specific traits significantly were used for stepwise multiple regression analysis. Associated markers explained from 6. 2% (for lint weight، seed weight and micronaire) to 43% (for 2. 5% span length) of the total variation available for different individual traits. Results suggest that these AFLP markers could be used for predicting and selecting desirable cotton germplasm to improve these traits.