Genotype × input-management interactions in sorghum* Rao K. Vidyasagar, Rao S. Subba, Rao N. G. P. National Research Centre for Sorghum, lARI-Regional Station, Hyderabad 500 030 (AP) *Part XXIII of the series ‘Genetic analysis of some exotic × Indian crosses in sorghum’ Part XXII appeared in Indian J. Genet. 40. Summary Experiments involving hybrids and varieties were conducted each under high and low input-managements at six locations over a three-year period. The top ranking hybrids and varieties maintained their relative ranks under both types of inputs and managements. The rank correlations were highly significant. The genotype × input management interaction was significant only in a few cases. Even here, the magnitude of the m.s. for this interaction was the lowest compared to m.s. for genotype or management. Estimates of H, √H and E (ΔY) also revealed the advantages of selection under optimal environments. Top |