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An experiment was framed to know the genetic variability, heritability, genetic advance and character association among the lines homozygous dominant for gall midge resistance gene Gm4 in the genetic background of ADT 38 variety of rice in advanced backcross (BC1F5) generation of rice. The Phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all the characters studied. High GCV coupled with high PCV was exhibited by single plant yield. This result creates scope for selection of superior segregants. | Morphological characterization of advanced backcross population for yield and yield attributing character in rice Oryza sativa L.