Correlation and Path Coefficient Analysis of Yield Traits in Elephant Foot Yam Amorphophallus paeoniifolius (Dennst.)

Abstract

An experiment was conducted to study the correlation and path coefficient analysis in twenty four accessions and two varieties of open pollinated seedling progenies of elephant foot yam. Results for all quantitative characters indicated that the trait yield per hectare was significant and positively correlated with the quantitative characters at both genotypic and phenotypic levels. Yield per hectare has shown the significant and positive correlation with height of corm (cm), pseudo-stem height (cm), plant height (cm), thickness of pseudo-stem base (cm), breadth of largest leaflet (cm), diameter of corm (cm), number of leaflets per rachis, length of largest leaflet (cm), length of primary partition (cm), days to senescence at both genotypic and phenotypic levels. Path coefficient analysis revealed by plant height (cm) followed by diameter of corm (cm), length of cormel (cm), weight of cormels per plant (g) exhibited a very high positive direct effect on yield per hectare at genotypic level, but at phenotypic level the traits viz., number of secondary partitions, number of primary partitions, plant height (cm), length of cormel (cm),diameter of corm (cm) revealed a very high positive direct effect on yield per hectare.