Vol. 5, Issue 2 (2020)
Assessment of genetic variability and traits association in upland cotton (gossypium hirsutum l.)
Author(s): Muhammad Hussain Bhatti, Muhammad Irfan Yousaf, Aamir Ghani, Muhammad Arshad, Aamar Shehzad, Aamer Mumtaz, Muhammad Umer Khalid, Muhammad Zeeshan Khalid, Muhammad Zegham Mushtaq, Syed Awais Sajid Shah
Abstract: The present study was performed to explore genetic mechanism of yield related traits in upland cotton using thirty diverse regional cotton varieties at Cotton Research Sub-Station Raiwind, during kharif season 2015 using complete randomize block design in three replications. Analysis of variance depicted highly significant differences for all the selected traits viz, plant height, Days to first flower, Number of Monopodial branches, Number of Sympodial branches, Number of bolls/plant, Nodes/plant and seed cotton yield. All the traits revealed the phenotypic variance was slightly higher than genotypic variance; similarly, phenotypic coefficient of variance was greater than genotypic coefficient of variance which also predicts presence of additive genes for these traits. The Broad sense heritability (hBS) estimates were observed high for all the traits under study, but in only four characters i.e. No. of Monopodial branches, Number of Sympodial branches, seed cotton yield and number of bolls/plants it coupled with high genetic gain also, which promised the further effective selection on phenotypic basis, while for other attributes indirect selection will be suitable. Seed cotton yield exhibited highly significant and positive relation with sympodial branches/plant and bolls/plant whereas it displayed negative association with other studied attributes.