Department of Plant Breeding and Genetics, College of Agriculture, Rewa 486001.
Effectiveness of different selection methods (pedigree, bulk and SSD) in segregating population of rice cross ARC 10372 X IR 36 were worked out under different environments, viz. selected and tested in irrigated conditions, selected in upland and tested in irrigated conditions, selected in irrigated and tested in upland conditions and selected and tested in upland conditions. Substantial variability for yield and its components in F2 gradually declined with the increase of mean values in subsequent generations of selection from F2 base population and varied from method to method and selection in different environments. Heritability values gradually increased with the advancement of generation. Whenever heritability was high in the early generations, it continues to remain high even after subsequent cycles of selection. Bulk and SSD methods were superiorin retaining and maintaining the high yielding lines in comparison to pedigree method of breeding. However, genotype X environment X method interaction had much bearing in changing the expression of yield and its components.
Breeding methods, pedigree, bulk, SSD, selection response, heritability, upland rice
