Abstract

Phenotypic and genotypic correlations were calculated under artificial turicumn leaf blight inoculated conditions to assess the degree of relationship of yield components with grain yield in maize. Genotypic correlation coefficiants possessed higher values for all the yield parameters than phenotypic 'r' values. Yield was positively and significantly correlated with number of kernels per row, number of kernel rows/ear, ear length, ear girth and 100 kernel weight both in parents and single crosses. Turicum leaf blight disease score has negatively correlated with grain yield both in parents and single crosses. The results indicated possibility of developing a high yielding turcicum leaf blight resistant variety/hybrid cultivar if genotypes are selected based on their strongly associated yield contributing components.

Keywords: Phenotype, Genotype, Correlations, Turcicum Leaf Blight, Maize, Yield Parameters