Abstract
Mutagenic effectiveness and efficiency of gamma-rays was compared with the biologically comparable doses of NMU, EMS and NaN3 in M2 and M3 generations of large-seeded Macrosperma lentil. NMU was 1.25-2 times more effective than gamma-rays, EMS and NaN3 in M2 generation. It was also the most efficient mutagen. The next effective and efficient mutagen was gamma-rays, followed by EMS and NaN3. The latter two chemicals were comparable. The results were consistent in M3 generation. The magnitude of effectiveness (Mp/dose) was higher in M2 than M3, while the reverse was true for effectiveness (Ms/dose). The estimates of efficiency (Mp/I or Ms/I) were higher in M2 than M3 generation.
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