FORMATION AND VARIABILITY OF MORPHOLOGICAL TRAITS IN COLLECTIONSAMPLES OF COTTON WITH NATURALLY COLORED FIBER SPECIES G.HIRSUTUM L., USED IN ANALYTICAL BREEDING

The article presents the results of the analysis of some morphological features of cotton samples with naturally colored fiber of the G.hirsutum L species, selected by the method of analytical selection, aimed at studying the formation and variability of such features as early maturity, the laying of the first fruit branch (hs), the number of sympodial and monopodial branches. Based on the results of the analysis, the best collection samples of cotton were selected: - sample 02757 ssp.mexicanum (with beige fiber) on the basis of «early maturity», where М=116.2±0.43; δ = 3.53; V% = 3.04. - sample 017597 (with brown fiber) on the basis of «height of the first fruit branch» (hs), where М = 116.9 ± 0.2; 3; δ = 39; V% = 2.9 - Ankansas Greenlint (with green fiber) on the basis of «the number of monopodial branches», where M = 2.2 ±0.07; δ = 1.04; V% = 0.47. - Turkish (with brown fiber) on the basis of «the number of sympodial branches», where M = 18.0 ± 0.15; δ = 2.34; V% = 0.91, which should be taken into account in further selection work.