Improvement of Selected Okra (Abelmoschus Spp.) Varieties for Fruit Yield and Productivity

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Abstract

Four field experiments were conducted at the Teaching and Research Farm of the Department of Crop Science, University of Nigeria, Nsukka to: (i) improve the photoperiodic response, especially in local (late) maturing varieties of Okra; (ii) estimate heterosis and heritability for improved yield and productivity; (iii) determine combining ability and gene effects of 13 genotypes of okra; (iv) estimate gene effects of quantitative traits; (v) determine inheritance pattern of qualitative traits for improved fruit production. The experimental materials used were three local varieties (Ele Ndu, Ele Ogwu, Ele Uhie) collected from local farmers in Nsukka LGA, Enugu State; and ten improved varieties (LUDU V., Esculentus V, Jokoso, Agwu Early, TAE 38-Dwarf, V-21 Ivra, Clemson spineless, LD88 V., V.35 and NHE 47-4 V) from the National Institute for Horticultural Research and Training (NIHORT), Okigwe, Imo State. General combining ability of the parents and specific combining ability of the hybrids were estimated using Griffings’ model 1 method 2 in a 5 x 5 diallel crosses. Chi square statistic was used to test for the inheritance pattern and degree of significance in traits of interest. ‘Ele Uhie’ parent showed significantly (p

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