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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 1
First page : (1) Last page : (5)
Article doi: : http://dx.doi.org/10.18782/2582-2845.7956

Genetic Variability, Heritability and Genetic Advance for Yield and some Agronomic Traits in Digitaria exilis Accessions

Umar F. A.*, Isong A., Dachi S. N., Onyia K. C., Ekaete J., Shehu H., Uyokei U. and Ogeh B. O.
National Cereals Research Institute, Badeggi, P.M.B 8, Bida, Niger State, Nigeria
*Corresponding Author E-mail: fatimaumar402@gmail.com
Received: 17.01.2019  |  Revised: 23.02.2020   |  Accepted: 27.02.2020 

 ABSTRACT

The study was to evaluate the genetic variability, broad sense heritability and genetic advance in the D. exilis. The experiment was conducted in 2018 raining season using twelve (12) accessions of D. exilis, laid out in a Randomised Complete Block Design with three replications. The plot size was of 4 x 5 m2, observations were made on eight traits, and data were subjected to statistical analysis. Days to 50% flowering, number of tillers per plant, panicle length, days to maturity and grain yield showed significant difference at 5% probability. Higher GCV (20.28%) for days to 50% flowering as compared to PCV (6.06%) indicates that the trait is under genetic control. The higher extent of PCV for number of spikes/panicle, length of spike and plant height as compared to GCV indicates greater contribution of environmental influence in the expression of these traits. The close magnitude of GCV and PCV observed for number of tillers per plant, panicle length, days to maturity and grain yield indicates the effectiveness of selection for these traits. High heritability in broad sense was recorded for number of tillers per plant (74.56%), days to maturity (99.81%) and grain yield (76.57%). High heritability coupled with high to moderate genetic advance over mean was observed for number of tillers per plant, days to maturity and grain yield, this indicates the presence of additive gene action, and selection could be effective for these traits. However, low heritability coupled with low genetic advance recorded for number of spike per panicle, length of spike and plant height indicates the action of non-additive gene.

Keywords: Acha, D. exilis, Heritability

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Umar, F.A., Isong, A., Dachi, S.N., Onyia, K.C., Ekaete, J., Shehu, H., Uyokei, U., & Ogeh B.O. (2020). Genetic Variability, Heritability and Genetic Advance for Yield and some Agronomic Traits in Digitaria exilis Accessions, Ind. J. Pure App. Biosci. 8(1), 1-5. doi: http://dx.doi.org/10.18782/2582-2845.7956