Pak. J. Bot., 25(2): 161-166, 1993.

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	*CHLOROPHYLL MUTATIONS IN VIGNA RADIATA* (L.) WILCZEK. II. MUTAGENIC EFFECTIVENESS AND EFFICIENCY OF CHEMICAL MUTAGENS SAMIULLA H.KHAN AND BAHAR A. SIDDIQUI Abstract:** Using EMS, MMS and SA, mutations were induced in two mungbean (Vigna radiato (L) Wilczek) varieties viz., PS-16 and Pusa Baisakhi. Three different types of chlorophyll mutants viz., albina, Chlorina and Viridis were observed in M₂ generation. Chlorophyll mutation frequency increased with increase in concentration of various mutagens. EMS produced highest frequency of mutations followed by MMS and SA. On the basis of their effectiveness, three mutagens stood in the declining order of MMSSAEMS whereas on the basis of their efficiency, the sequence was EMS, MMS and SA. All the three mutagens were found to be effective and efficient at the lower mutagen concentrations. Mutation Breeding Laboratory, Department of Botany, Aligarh Muslim University, Aligarh-202 002, India.

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