Correlation and Path Coefficient Analysis among Yield Component Traits of Ethiopian Mustard (Brassica Carinata a. Brun) at Adet, Northwestern, Ethiopia
Journal of Plant Sciences
Volume 2, Issue 2, April 2014, Pages: 89-96
Received: Feb. 9, 2014; Accepted: Apr. 16, 2014; Published: Apr. 20, 2014
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Authors
Tesfaye Walle Mekonnen, Department of Horticulture, Wolkite University, Wolkite, Ethiopia
Adugna Wakjira, Ethiopian Institute of Agricultural Research, Addis Ababa, Ethiopia
Tsige Genet, Department of Plant Science, College of Agriculture and Environmental Science, Bahir Dar University, Bahir Dar, Ethiopia
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Abstract
The knowledge of Ethiopian mustard improvement for a targeted character can be achieved by indirect selection via other characters that are more heritable and easy to select. This selection strategy requires understanding the interrelationship of the characters among themselves and with the target character. The degree of association between two characters is measured by the correlation coefficient. Correlation is, therefore, helpful in determining the component characters of a complex trait, like yield. The present study was undertaken to determine nature of association of agronomic traits of thirty six Ethiopian mustard (Brassica carinata) genotypes which were evaluated Adet Agricultural Research Center, Ethiopia. The experiment was laid out in simple lattice design with two replications. The correlation and path coefficient analysis were conducted for 15 and five traits respectively at phenotypic and genotypic levels. Seed yield per plot was positively correlated with oil yield, biomass, plant height, days to maturity, grain-filling period, and secondary branches per plant and 1000seed weight at both genotypic and phenotypic levels. However, it was negatively correlated with days to flowering, number of pod per plant, number of seeds per pod and pod length at phenotypic level and, with primary branches per plant and harvest index at genotypic level, and oil content negatively correlated with at both levels. Phenotypic and genotypic path coefficient analysis of harvest index had exerted positive direct effect on seed yield. Grain filling period and harvest index had exerted positive direct effect on oil content at genotypic level. Day to maturity, grain filling period, secondary branches per plant, harvest index and seed yield seed yield per plot had exerted negative effect on oil content at phenotypic level
Keywords
Correlation, Direct Effect, Ethiopian Mustard, Indirect Effect, Path Coefficient
To cite this article
Tesfaye Walle Mekonnen, Adugna Wakjira, Tsige Genet, Correlation and Path Coefficient Analysis among Yield Component Traits of Ethiopian Mustard (Brassica Carinata a. Brun) at Adet, Northwestern, Ethiopia, Journal of Plant Sciences. Vol. 2, No. 2, 2014, pp. 89-96. doi: 10.11648/j.jps.20140202.12
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