Genetic Variations, Heritability and Genetic Advance Studies among Okra Accessions grown in different Agro-ecological Zones in Nigeria
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Date
2019-05-16
Journal Title
Journal ISSN
Volume Title
Publisher
International Journal of Food Science and Agriculture
Abstract
Some level of variation within crop varieties is highly important for its improvement
with the aids of good plant breeding methods. A field research experiment was carried
out with the aim to estimate genetic variation and heritability in the okra accessions
grown in different agro-ecological zones in Nigeria. Twenty okra accessions were
obtained from various locations in different agro-ecological zones of Nigeria. Twenty
okra accessions were evaluated between April to August 2018 at Ekiti State University
Teaching and Research Farm, Ekiti State. These twenty okra accessions constituted the
treatment, which was lied out in a RCBD in a three replicates. The result were highly
significant (p<0.01) for all the traits studied. Magnitude of the phenotypic coefficient
of variances were slightly higher than genotypic coefficient of variances in this study
which showed that environment did not much influence the estimates of genetic
performance. The coefficient of phenotypic and genotypic variances were high in the
traits studied. Heritability estimates ranges from 75.04% for days to 50% flowering
to 98.85% for weight of 100 seeds. High heritability with high genetic advance were
observed for all the studied traits indicating that they are governed by additive gene
action and this could be improved through simple selection except days to 50%
flowering with the lowest heritability value coupled with the lowest genetic advance
value lesser than 10%.
Description
Keywords
Heritability, Genetic advance, Improvement, Genetic variability, Okra
Citation
Agbowuro, G. O., Salami, A. E., Awoyemi, S. O., Ogunwale, G. I., Kehinde-Fadare, A. F., & Olajide, O. O. (2019). Genetic Variations, Heritability and Genetic Advance Studies among Okra Accessions grown in different Agro-ecological Zones in Nigeria.