Vol. 12, Issue 8 (2023)

Author(s):
Hardik H Patel, Kalpesh V Patel, Vipul L Suthar, Rahul J Parmar and Sunil K Patel

Abstract:
This experiment aimed to investigate genetic variability among the all genotypes along with heritability presence, genetic advance per cent over mean, correlation studies and path coefficient carried out for 17 different characters in 16 genotypes, including sixty-four F₁ hybrids, and one check G. Cot. Hy. 18 of upland cotton (Gossypium hirsutum L.). The trail was demonstrated during the Kharif season of 2022 at the Regional Research Station (RRS), Anand Agricultural University, India. Variability studies revealed high phenotypic coefficient of variation (PCV) and moderate genotypic coefficient of variation (GCV) for the number of bolls per plant, lint yield per plant and seed cotton yield per plant. Additionally, the number of monopodia per plant exhibited a high estimate of both PCV and GCV. Heritability analysis showed high heritability for various traits, including days to 50% flowering, days to 50% boll bursting, plant height, monopodia per plant, sympodia per plant, number of bolls per plant, boll weight, lint yield per plant, seed cotton yield, seed index, fiber strength, fiber fineness, and seed oil content. Moreover, days to 50% flowering, plant height, number of monopodia per plant, number of sympodia per plant, number of bolls per plant, boll weight, lint yield per plant, seed cotton yield, fiber fineness, and seed oil content demonstrated both high heritability and significant genetic advance as per cent over the mean. This stipulate significant attributing part of additive gene action in the heredity of these characteristics. During the correlation study, it was found that seed cotton yield per plant showed noteworthy positive correlations with several traits: the number of sympodia per plant (0.29), the number of bolls per plant (0.77), fiber length (0.26), uniformity index (0.37), and lint yield per plant (0.95). Path analysis revealed that seed index and ginning outturn had the highest positive and direct effects on seed cotton yield per plant.