Vol. 12, Issue 6 (2023)

Author(s):
Shradha Aherkar, Surendra Deshmukh, Nitin M Konde, Aadinath N Paslawar, Vilas K Kharche, Tanay Joshi and Amritbir Riar

Abstract:
Heritability coupled with genetic advance proves a reliable measure for selecting the characters which have high yielding ability. Heritability study in 22 cotton genotypes (including checks) were undertaken at Center of Organic Agriculture Research and Training center (COART), Department of Agronomy, Dr. PDKV, Akola during kharif season 2020-2021. Results revealed that characters trichomes density cm^-2, number of gossypol glands cm^-2 and total soluble sugar recorded high heritability and high genetic advance indicating additive gene action whereas, total nitrogen, crude protein, number of whiteflies per plant and number of aphids per plant recorded low heritability and low genetic advance indicating the non-additive gene action. Low heritability and high genetic advance was observed for seed cotton yield per plant indicating the presence of additive and non-additive gene action. High values of genotypic variances (GV) and phenotypic variances (PV) were observed for the characters viz., trichome density cm^-2, number of gossypol glands cm^-2, chlorophyll content index and total soluble sugar and high values of genotypic coefficient of variances (GCV) and phenotypic coefficient of variances (PCV) were recorded for number of leafhoppers per leaf, number of thrips per leaf, number of aphids per leaf and number of whiteflies per leaf and moderate values of GCV and PCV were recorded for total soluble sugar, number of gossypol glands cm^-2, trichome density cm^-2 and boll weight.