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Genetic variation and interrelationships among antioxidant, quality, and agronomic traits in vegetable amaranth

This investigation was aimed to evaluate 22 promising vegetable amaranth genotypes for antioxidant, leaf quality, and agronomic traits for two test seasons. The experiment was conducted to study the degree of genetic parameters, associations among different traits, and their contribution towards foliage yield. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2016) 40: 526-535 © TÜBİTAK doi:10.3906/tar-1405-83 http://journals.tubitak.gov.tr/agriculture/ Research Article Genetic variation and interrelationships among antioxidant, quality, and agronomic traits in vegetable amaranth 1, 1 2 3 4 Umakanta SARKER *, Md. Tofazzal ISLAM , Md. Golam RABBANI , Shinya OBA Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh 2 Department of Biotechnology, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh 3 Department of Horticulture, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, Bangladesh 4 Laboratory of Field Science, Faculty of Applied Biological Science, Gifu University, Gifu, Japan Received: 21.05.2014 Accepted/Published Online: 07.03.2016 Final Version: 14.06.2016 Abstract: This investigation was aimed to evaluate 22 promising vegetable amaranth genotypes for antioxidant, leaf quality, and agronomic traits for two test seasons. The experiment was conducted to study the degree of genetic parameters, associations among different traits, and their contribution towards foliage yield. The analysis of variance for twelve traits was found highly significant. High mean, high range of variability, and high genotypic variance were observed for all the traits except content of Ca, protein, and carotenoid. Close differences between genotypic and phenotypic variances and genotypic and phenotypic coefficients of variation were observed for all the traits. High to moderate genotypic coefficients of variation and heritability coupled with high to moderate genetic advance in percent of mean was observed for all the traits. Considering all genetic parameters, selection based on Fe, Zn, Mn, ascorbic acid content, fiber content, plant height, leaves plant–1, diameter of stem base, and foliage yield would