EVALUATION AND SELECTION OF RAPESEED (B rassica napus L.) M UTANT LINES FOR YIELD PERFORMANCE USING AUGMENTED DESIGN Authors: I. Ali, H. M. Ahmed, S. A. Shah Journal: Journal of Animal and Plant Sciences (JAPS) ISSN: 1018-7081 (Print), 2309-8694 (Online) Volume: 23 Issue: 4 Pages: 1125-1130 Year: 2013 DOI: NA URL: https://doi.org/NA Publisher: Pakistan Agricultural Scientists Forum Abstract:

The present study was undertaken to evaluate rapeseed mutants for yield and yield components at an early stage of entry selection in a non-replicated trial. Sixty five mutant entries were selected from gamma irradiated population of 1.0, 1.2 and 1.4 K Gys. and planted in augmented incomplete block design in four blocks. The data on days to 50% flowering, seed yield (kg ha-1), 1000 seed weight (g) and oil yield (kg ha-1) were recorded and analyzed to workout variance and contrast analyses. Significant differences were revealed for all the traits among the mutants and with the control except 1000-seed weight. Three mutant lines were significantly superior both in seed yield and oil yield. Ten mutant lines took significantly less number of days to 50% flowering. The study confirmed the effeciency of augmented design in the evaluation and selection of superior genotypes in early generation with better yield potential.

Keywords: Rapeseed, Gamma Rays, Non-Replicated, Augmented Design