Genetic Variability and Heritability in Ethiopian Grasspea (lathyrus sativus l.) Accessions

Abate, A and Mekbib, F and Fikre, A and Ahmed, S (2018) Genetic Variability and Heritability in Ethiopian Grasspea (lathyrus sativus l.) Accessions. Ethiopian Journal of Crop Science, 6 (2). pp. 79-94. ISSN 2072-8506

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Abstract

Comprehensive information on genetic variability and selection parameters is very crucial to design breeding strategies. However, very limited information is available in Ethiopian grasspea germplasm. Therefore, the present study was conducted to estimate genetic variability, broad sense heritability and genetic advance; and determine scope of selection for 18 quantitative traits using 426 Ethiopian grasspea accessions. The analysis of variance showed highly significant (P < 0.0001) differences for most of the traits demonstrating the presence of high genetic diversity among the studied grasspea accessions. Higher differences between PCV and GCV estimates were observed for number of pods, effective pods and seed yield signifying the importance of environmental factors influence. High heritability coupled with high genetic advance was observed for many of agronomically important traits indicating that the high heritability is due to additive gene effects and therefore, selection can be effective for the improvement of grasspea for those traits. On the contrary, low heritability coupled with low genetic advance was recorded for number of seeds per pod indicating greater contribution of non-additive gene effects on the expression of this trait.

Item Type: Article
Divisions: Research Program : East & Southern Africa
CRP: UNSPECIFIED
Uncontrolled Keywords: Additive effect, Coefficient of variation, Genetic advance, Genetic Variability, Grasspea, Ethiopia, Heritability
Subjects: Others > Genetics and Genomics
Others > Legume Crops
Depositing User: Mr Ramesh K
Date Deposited: 07 May 2018 09:19
Last Modified: 07 May 2018 09:19
URI: http://oar.icrisat.org/id/eprint/10637
Official URL:
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: The authors wish to appreciate Ethiopian Biodiversity Institute and Debre-Zeit Agricultural Research Center for the provision of accessions; and experimental land and labor support, respectively, for execution this study.
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