Correlation and Path Coefficient Analysis among Yield Component Traits of Ethiopian Korerima [Aframomum Corrorima (Braun) P. C. M. Jansen] Genotypes at Tepi, Ethiopia

Abstract

An experiment was conducted in research fields to study Phenotypic and genotypic correlation co-efficient of quantitative characters and character association of korerima. Twenty-five korerima germplasm of diverse sources were used to assess the character association and contribution of characters towards capsule/seed yield. Path coefficient analyses were carried out for selected genotypes and to find out the direct and indirect effect of component characters on capsule/seed yield. Analysis of phenotypic and genotypic correlation co-efficient of quantitative characters and partitioning of genotypic correlation to pure seed revealed positive and significant correlation both at genotypic and phenotypic levels with number of capsule bearing suckers per plant, number of capsules per plant, dry capsules weight, number of seeds per capsule, total seeds weight per capsule, dry capsule yield per plot and dry capsule yield ha^-1. Number of seeds per capsule, total seed weight per plot, dry capsule yield per plot and dry capsule yield had high and positive direct effects on pure seed yield, however, number of capsule bearing sackers per plant, dry capsule weight and number of capsule per plant had negative direct effects on pure seed yield at genotypic level. The result indicated that the positive and significant correlation of number of capsule bearing suckers per plant, dry capsule weight, total seed weight per plot, dry capsule yield per plot and dry capsule yield kg ha^-1 with pure seed yield per plot were due to the high direct effect of the characters. Data of this study might be useful for quantitative assessment of the variation in yield and yield components, their interrelationship, and direct and indirect effects of different characters on seed yield of korerima.

Keywords: Correlation, Direct Effect,  Indirect Effect, Path Coefficien, Aframomum corrorima, Korerima

DOI: 10.7176/JBAH/9-9-06

Publication date:May 31^st 2019