Volume 2, Issue 2, April 2014, Page: 89-96
Correlation and Path Coefficient Analysis among Yield Component Traits of Ethiopian Mustard (Brassica Carinata a. Brun) at Adet, Northwestern, Ethiopia
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
Received: Feb. 9, 2014;       Accepted: Apr. 16, 2014;       Published: Apr. 20, 2014
DOI: 10.11648/j.jps.20140202.12      View  3372      Downloads  298
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
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
Abebe Delesa, Adugna Wakjira and Ketema Belete, 2006. Genetic variability and Association among seed yield and Yield related traits in Ethiopian mustard (Brassica carinata A. Braun) at Kulumsa, Arsi .An M.Sc. Dissertation Presented to the School of Graduate Studies of Alemaya University. 90pp.
Adefris Teklewold., 2005. Diversity study based on quality traits, RAPD Markers, and Investigations of Heterosis in Ethiopian Mustard. Doctoral Dissertation.George-Augest University of Gottingen, Germany. 160 pp.
Bhan,S. ,1979. Effect of soil moisture and nitrogen on mustard under Gangetic alluvium of Uttarpradesh. Ind. J. Agron. 24: 180-186.
Dewey, D.R. and K.H. LU., 1959. A correlation and path coefficient analysis of components of crested wheat grass seed production. Agronomy Journal. 51: 515-518.
Doweny, R. K., 1971. Agricultural and genetic potential of Cruciferous oilseed crops. Ame. Oil. Chem. Soc. J. 48: 728-732.
Gangapur, D. R., 2008. Studies on Genetic Variability in the Indian mustard (Brassica juncea L. Czern and Coss) Germplasm and its Suitability to Northern Karnataka . Dharwad University of Agricultural Sciences (Indian), pp.50-54.
Getinet Alemaw., G. Rakow and R. K. Doweny., 1996. Agronomic performance and seed quality of Ethiopian mustard in Saskatchewan. Can. J. Plant sci. 76: 387-392.
Kumar, S. and B.P.S. Chauhan., 1979. Association analysis in the segregating populations of linseed. Indian. J. Genet. 39: 506-510.
Falconer, D.S. and Mackay, F.C., 1996. Introduction to quantitative genetics. (4thEdition). Long man, New York,USA. Pp464.
Miller, P.A., C. Williams, H.F. Robinson and R.E. Comstock., 1958. Estimates of genotypic and Environmental variances and co-variances in upland cotton and their implications in selection. Agronomy Journal. 50:126 –131.
Nigussie Alemayehu, 1990. Yield and yield components of Ethiopian mustard and rapeseed as affected by some agronomic practices. An MSc. Dissertation Presented to the School of Graduate Studies of Alemaya University. 112p.
Nigussie Alemayehu., 2001. Germplasm diversity and Genetics of Quality and Agronomic Traits in Ethiopian Mustard (Brassica carinata A. Braun). Ph. D. Dissertation, George-August University of Gottingen, Germany.
Robertson ,A.,1959.The sampling variance of the genetic correlation coefficient. Biometrics 15:469-485.
Sastri, A.B., 1974. Path analysis of yield components in Tobacco. Indian. J. Genet. 34: 57-58.
Sheikh, F.A., A.G. Rather and S.A. Wani, 1999. Genetic variability and inter-relationship in toria (Brassica campestris L. var. Toria). Advances in Plant Sciences, 12(1): 139-143.
Singh, K.B., Geletu, B. and Malhotra, R.S., 1990. Association of some characters with seed yield in check pea collections. Euphaytica. 49:83–88.
Singh, R. K. and Chaudhary, B.D., 1999. Biometrical methods in quantitative genetics analysis. Kalyani publishers, New Delhi. Pp 73.
Singh, P. and Narayanan, S.S., 1993. Biometrical techniques in plant breeding. Kayani Publishers, New Delhi.
Singh, M. and G. Singh, 1997. Correlation and path analysis in Indian mustard (Brassica juncea L.) under mid hills of Sikkim. Journal of Hill Research (India)., 10(1): 10-12.
Singh, T.P. and K.B. Singh, 1973. Association of grain yield and its components in segregating populations of green gram. Indian J. Genet. 33:112-117.
Tsige Genet. Labuschagne, M.T. and Hugo, A., 2005b. Genetic relationships among Ethiopian Mustard genotypes on oil content and Fatty acid composition. Afri. J. of Biotech. 4: 1256 - 1268.
Tsunoda, S., 1980. Biosynthesis of seed oil and Breeding for improved oil quality of Rapeseed. In: Brassica crops and wild allies: Biology and Breeding. Tokyo, 253 - 283 pp.
Wright, S., 1921. Correlations and causations. J. Agri. Res. 20:557-587.
Zemede Asfaw., 1992. Conservation and use of traditional vegetables in Ethiopia. http:www. Bioversity international
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