Correlation and path analysis in sorghum (Sorghum bicolor L. Moench)

  • R. Prakash, K. Ganesamurthy, A. Nirmalakumari and P. Nagarajan
Keywords: Sorghum, Fodder yield, Correlation, Path analysis

Abstract

An investigation was carried out with 12 parents and their 35 hybrids (L x T mating design) of sorghum to asses association
of fodder yield components and their direct and indirect effects on green fodder yield per plant. Results of correlation analysis indicated that the green fodder yield per plant was found to be significantly and positively correlated with plant height, number of tillers, leaf length, leaf breadth, stem diameter, hydrocyanic acid and crude fibre. Days to 50 per cent flowering, crude protein, and in vitro dry matter digestibility showed a negative association with green fodder yield per plant. Path analysis showed that plant height contributed high direct effect to green fodder yield per plant followed by leaf breadth (Moderate) and leaf length (Moderate). Stem diameter and in vitro dry matter digestibility also exerted positive direct effect on green fodder yield. Thus, the present study indicated that the plant height, leaf length, leaf breadth and stem
diameter are important characters in deciding the green fodder yield per plant. Hence these characters may be considered as
selection indices in sorghum breeding programme.
Published
30-06-2010
Section
Research Note