Department of Agricultural Botany, J. V. College, Baraut
Department of Plant Breeding, Haryana Agricultural University, Hissar
1Part of a Ph.D. thesis submitted by B. S. Chaudhary to the Meerut University, Meerut.
Stability parameters (b and ⃖S2d) for grain yield and its component characters in bread wheat (Triticum aestivum L.) evaluated by growing 21 homogeneous and heterogeneous genotypes in eight different environments, showed that the grain yield and its direct components showed the highest response (b) indicating that homogeneous populations were less buffered than the heterogeneous populations. Heterozygous-heterogeneous (F2 and F3) and homo-zygous-heterogeneous (mixtures) populations, representing high genetic variability, expressed relatively more stability over homozygous-homogeneous (parental) and heterozygous-homogeneous (F1) populations especially for grain yield and its direct component characters, whereas no specific trend was evident for the remaining attributes.
