Correlation and path coefficient analysis for yield components and quality traits in radish (Raphanus sativus L.)

A study was carried out to understand the correlations and path analysis for yield and its contributing traits in radish. Seventeen radish genotypes were grown in randomized complete block design replicated three times. Observations were recorded on 18 parameters related to plant growth, root yield and root quality. Genotypic correlation coefficients complimented the phenotypic coefficients and were generally higher than their phenotypic counterparts. Character association analysis revealed highly significant and positive correlation between root yield and marketable yield, root weight, plant weight, root diameter, root length and root plant ratio. Increase in root mass also lead to increase in vitamin C and isothiocyanate content in the roots. Path coefficient analysis both at phenotypic and genotypic levels, revealed strongly positive direct effect of marketable yield, root weight and foliage weight on the total root yield. Greater emphasis on direct and desirable selection for traits such as root diameter, root length and higher root: plant ratio would be effective in increasing the overall root yield and quality.