EVALUATION OF PLANT INJURY DUE TO RADIATION IN M1 GENERATION OF SESAME (SESAMUM INDICUM L)

Abstract

Physiological damage during M1 generation is one of the important considerations for the
selection of mutagen and its dose. In present study plant injury due to gamma radiation in sesame
(Sesamum indicum L.) was analyzed. Air dried seeds of two cultivars of sesame i.e. Krishna and
RT 54 were treated by gamma rays in single dose of 60 kr., split dose of (30+30) kr. and
(20+20+20) kr. . Plant injury was observed in all radiated population of both cultivars in M1
generation, indicating the role of gamma ray in bringing small or large physiological damage.
Plant injury due to split doses was found higher than that of single dose in both cultivars.