Jain K.,Raja Balwant Singh College DBRAU |
Mishra M.N.,Raja Balwant Singh College DBRAU |
Waza S.A.,Institute of Agricultural science |
Sharma R.,Raja Balwant Singh College DBRAU |
Bano D.A.,Institute of Agricultural science
Indian Journal of Ecology | Year: 2015
The present investigation was undertaken to induce genetic variability through the use of temperature (physical) and Hydroxyl amine (chemical) mutagenic treatments on two popular bread wheat varieties, PBW-373 and Raj-3765. The data on seed quality parameters, like mean germination percentage, shoot length, root length and seedling vigour index, were recorded in M, generation. In field, the observations were recorded on characteristics like Days to ear head emergence, Days to blooming, Days to maturity, Plant height (cm) at maturity, Number of effective tillers per plant, Spike length (cm), Number of grains per spike, Number of spikelets per spike, 100 grain weight (g) and Grain yield per plant (g). Analysis of variance (Split plot design) and parameters of statistical and genetic variability (micro mutations) were estimated in the field related traits. Mutagenic treatments were found to increase the phenotypic and genotypic coefficient of variation as well as heritability and genetic advance. Macro mutations of economic and academic interest were also recovered. In general, 50 °C temperature treatment was observed as best, to improve the seed quality parameters, to create the genetic variability and for the enhancement of grain yield and yield related traits.