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Fekadu Amsalu Worekeneh
Sentayehu Alamerew
Bulecha Woyessa
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Sentayehu Alamerew
Bulecha Woyessa
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International Journal of Plant Breeding and Crop Science

Genetic variability, heritability, genetic advance, genetic advance as percent mean and character association of Ethiopian mustard (Brasica carinata A. Braun) land races

Fekadu Amsalu, Sentayehu Alamerew, Bulecha Woyessa

Holetta Agricultural Research Center P. O. Box 2003, Addis Ababa, Ethiopia.Email:fekiamsalu@gmail.com

Department of Plant science and Horticulture, Jimma University P. O. Box 307, Jimma, Ethiopia.

Accepted 19 December, 2016.

Citation: Amsalu F, Sentayehu A, Bulecha W (2017). Genetic Variability, Heritability, Genetic advance, Genetic advance as Percent Mean and Character Association of Ethiopian Mustard (Brasica carinata A. Braun) Land races. International Journal of Plant Breeding and Crop Science, 4(1): 166-177.

Copyright: © 2017 Amsalu et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

Field experiment was conducted to estimate genetic variability, heritability, genetic advance, genetic advance as a percent mean and character association for forty nine genotypes of Ethiopian mustards collected from different agro ecologies. The experiment was carried out in a simple lattice design. The analysis of variance showed that there were significant differences among genotypes for all traits compared. The significant difference indicates the existence of genetic variability among the accessions which is important for improvement. High genotypic and phenotypic coefficients of variations were observed in seed yield per plot, oil yield per plot, and plant height. This shows that selection of these traits based on phenotype may be useful for yield improvement. The highest heritability in broad sense was recorded for thousand seed weight (68.80%) followed by days to flowering (65.91%), stand percent (63.14%), linolenic acid(62.58%), days to maturity (60.43%), plant height (59.63%), palmitic acid (58.19%), linoleic acid (57.46%),oil content (50.33%), oil yield (44.84%), seed yield per plot(42.99%),and primary branches(34.20%). This suggests that large proportion of the total variance was due to the high genotypic and less environmental variance. In the correlation coefficient analysis, seed yield per plot showed positive correlation with oil content, oil yield, plant height and seed yield per plant. In the path analysis, number of primary branches and oil yield showed positive direct effect on seed yield per plot. In this study, seed yield per plot, oil content, oil yield and primary branches were found to be the most important components for the improvement of seed and oil. Therefore more emphasis should be given for highest heritable traits of mustard and to those positively correlated traits to improve these characters using the tested genotypes.

Keywords: Ethiopian mustard, variability, Genetic advance, heritability; correlation, path analysis.