TY - JOUR AU - Adnan Kanbar, Katsuhiko Kondo and H.E. Shashidhar PY - 2011/06/30 Y2 - 2024/03/29 TI - Comparative efficiency of pedigree, modified bulk and single seed descent breeding methods of selection for developing high-yielding lines in rice (Oryza sativa L.) under aerobic condition JF - <i>Electronic Journal of Plant Breeding</i> JA - EJPB VL - 2 IS - 2 SE - Research Article DO - UR - https://ejplantbreeding.org/index.php/EJPB/article/view/1000 AB - The knowledge about the relative efficiency of the different breeding methods may greatly help the plant breeder in selecting abetter method to be adopted in a particular crop. In the present experiment, the comparative efficiency of three selectionmethods, viz., pedigree, modified bulk and single seed descent (SSD) were assessed in F3, F4, F5 and F6 generations of a crosscombination Moroberekan/IR20 of rice. Bulk population showed superiority over pedigree for grain yield, panicle length, numberof panicles, number of tillers and harvest index in F3 generation. Pedigree method was found to be superior over bulk and SSDfor grain yield per plant in F4 and F5 generations. In the three breeding methods, mean values of grain yield showed directionalshift across the generations. In F6 generation, the pedigree-derived lines showed higher superiority over mean value than linesderived from SSD and modified bulk for grain yield, number of panicles and harvest index. No significant differences existedbetween pedigree and modified bulk-derived F6 lines for grain yield and harvest index. Inter-generation correlation coefficientswere significant and positive between all the generations for grain yield, number of tillers and number of panicles. Significantand positive correlations were observed between these three characters across generations supporting the intergenerationcorrelation results. Visual selection based on the number of tillers and number of panicles per plant was very effective forincreasing yield in bulk and pedigree methods. ER -