Department of Genetics and Plant Breeding, Allahabad School of Agriculture, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad-211007, Uttar Pradesh, India.
E-mail: lavanya.roopa@gmail.com
An experiment was conducted to study the mutagenic effects of different concentrations of sodium azide (0.01%, 0.02%, 0.03%, 0.04% and 0.05%) on biological parameters viz., radicle length, plumule length, plant survival and pollen sterility in mungbean cv. ‘Malacca local’. Germination percentage decreased with increase in concentration of sodium azide. Radicle length and plumule length were increased till five days after mutagen treatment but decreased with increased sodium azide concentration. Plant survival (%) decreased with increased sodium azide concentration whereas pollen sterility increased with increased concentration. Effectiveness decreased with increased sodium azide concentration in M1 generation. Mutagenic efficiency for plant survival (%) increased with increased sodium azide concentration whereas mutagenic efficiency for pollen sterility was dose dependent. Plant height reduced significantly at 0.02%, 0.04% and 0.05% concentrations. Sodium azide treatment significantly increased clusters/plant, pods/plant and seed yield/plant at lower concentrations. Treatment with sodium azide seems to be more effective in reducing days to maturity in M2 generation but no relationship was observed with concentration. The present investigation concluded that sodium azide was found to be effective in inducing polygenic variability and it can be effectively utilized for yield improvement in mungbean.
Effectiveness, Efficiency, M1 and M2 generations, Mungbean, Sodium azide
