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Correlation Studies and Path Analysis of Agronomic Traits for Higher Cane Yield in Sugarcane

Department of Genetics and Plant Breeding, School of Agriculture, Lovely Professional University, Phagwara-
144 411 (Punjab), India

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(Received : January 23, 2019; Accepted : March 24, 2019)


The present investigation was undertaken to study the relationship between cane yield and its contributing
characters by using 30 diverse genotypes of sugarcane. Experiment was conducted at the Experimental
Farm, Lovely Professional University, Phagwara, Jalandhar, Punjab during 2017-19. They were evaluated
for means and components of variability (genotypic and phenotypic), heritability, genetic advance and
interrelationship for yield and yield contributing characters and path analysis. Analysis of variance (ANOVA)
revealed highly significant differences among the genotypes for all the characters. The estimates of phenotypic
(PCV) and genotypic (GCV) coefficients of variation indicated that the values of PCV were higher than those
of GCV for all the characters. High values of PCV and GCV were observed for SPAD reading, number of
tillers per plant, internodes length and plant height indicating presence of sufficient genetic variability.
High heritability coupled with high genetic gain for leaf blade length, plant height, cane yield and internodes
length suggested selection could be effective for these traits. Path analysis revealed that the maximum
direct and positive effect was due to number of tillers per plant followed by internodes length and cane

Key words :Heritability, GCV, genetic variability, PCV, path analysis, SPAD