Correlation and Path Coefficient Analyses in Sugarcane Genotypes of Ethiopia - American Journal of Plant Sciences

AJPS > Vol.7 No.10, July 2016

Correlation and Path Coefficient Analyses in Sugarcane Genotypes of Ethiopia ()

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DOI: 10.4236/ajps.2016.710141 2,102 Downloads 3,739 Views Citations

Author(s)

Esayas Tena^1*, Firew Mekbib², Amsalu Ayana³

Affiliation(s)

¹Sugar Corporation of Ethiopia, Research and Training, Wonji, Ethiopia.
²School of Plant Sciences, Haramaya University, Haramaya, Ethiopia.
³Integrated Seed Sector Development Ethiopia Program, Addis Ababa, Ethiopia.

ABSTRACT

To study the relations of certain morphological and sugar quality characters with sugarcane yield, an experiment was conducted at Wonji and Metehara Sugar Estates, Ethiopia between March 2012 and October 2013. The experiment, comprising of 400 sugarcane genotypes of which 174 were local that were collected from different regional states of Ethiopia and 226 introduced, was laid out in partial balanced lattice design with two replications. Data was collected on cane yield and its components, sugar yield and sugar quality traits. ANOVA, correlation and path coefficient analysis were done. Analysis of variance revealed significant differences (P < 0.01) for all the characters studied. Cane yield showed strong positive and highly significant (P < 0.01) correlation with millable cane number (r = 0.832), single cane weight (r = 0.528), stalk height (r = 0.517) and sugar yield (r = 0.987). There was also positive significant (P = 0.05) correlation of tiller count and cane diameter with cane yield. Path analysis revealed the highest positive direct effect of millable cane number (0.812) on cane yield followed by single cane weight (0.682) and pol percent (0.550). However, stalk diameter and brix percent had considerable negative direct effects and indirect positive effects through single cane weight on cane yield. Therefore, in view of their significant positive association with cane yield, indirect effects of stalk diameter and brix percent via single cane weight should be considered during selection. Genotypes should be selected on the basis of millable cane number, single cane weight and pol percent for getting higher cane and sugar yield.

KEYWORDS

Cane Yield, Morphological Characters, Sugar Quality, Sugar Yield

Share and Cite:

Tena, E. , Mekbib, F. and Ayana, A. (2016) Correlation and Path Coefficient Analyses in Sugarcane Genotypes of Ethiopia. American Journal of Plant Sciences, 7, 1490-1497. doi: 10.4236/ajps.2016.710141.

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