2010•Electronic journal of environmental, agricultural and food chemistryRequires access
Mutagenic effectiveness and efficiency of gamma-rays, sodium azide and their synergistic effects in black gram (V. mungo L.).
Kousar Makeen, B. G. Suresh, G. R. Lavanya
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Abstract
Mutagenic effectiveness and efficiency of gamma rays sodium azide and their combination treatments were studied in the genotype of urdben variety T9. The usefulness of any mutagen in plant breeding depends not only on its effectiveness but also upon its efficiency. Mutagenic effectiveness is a measure of the frequency of mutations induced by unit mutagen dose, whereas mutagenic efficiency is measure of proportion of mutations in relation to undesirable changes like lethality, sterility and meiotic aberrations etc. Synergetic as well as antagonistic effects may occur when various physical and chemical mutagens are used in combinations. The frequency of mutagenic efficiency and effectiveness was found to be highest at lower doses.