The knowledge of Ethiopian mustard improvement for a target 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, therefore, is helpful in determining
the component characters of a complex trait, like yield. The present study was undertaken to determine nature
association of agronomic traits of thirty six Ethiopian mustard (Brassica carinata) genotypes 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 per plot, biomass per plot, plant height,
days to maturity, grain-filling period, and secondary branches per plant and 1000-seed 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 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
The knowledge of Ethiopian mustard improvement for a target character can be achieved by indirect selection viaother characters that are more heritable and easy to select. This selection strategy requires understanding theinterrelationship of the characters among themselves and with the target character. The degree of associationbetween two characters is measured by the correlation coefficient. Correlation, therefore, is helpful in determiningthe component characters of a complex trait, like yield. The present study was undertaken to determine natureassociation of agronomic traits of thirty six Ethiopian mustard (Brassica carinata) genotypes were evaluated AdetAgricultural 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 andgenotypic levels. Seed yield per plot was positively correlated with oil yield per plot, biomass per plot, plant height,days to maturity, grain-filling period, and secondary branches per plant and 1000-seed weight at both genotypic andphenotypic levels. However, it was negatively correlated with days to flowering, number of pod per plant, number ofseeds per pod and pod length at phenotypic level and, with primary branches per plant and harvest index atgenotypic level, and oil content negatively correlated with at both levels. Phenotypic and genotypic path coefficientanalysis harvest index had exerted positive direct effect on seed yield. Grain filling period and harvest index hadexerted positive direct effect on oil content at genotypic level. Day to maturity, grain filling period, secondary
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