ROSETTE-AN INDUCED MUTANT OF BARLEY (HORDEUM VULGARE L.)

Abstract

In the course of mutation studies in barley, a rosette mutant wasisolated. Itwas screened in M2 generation of the cultivar HBL-98 following treatment with 10 kR gamma rays +05% ethyl methanesulphonate. It was confirmed as mutant in M3 generation. The mutant was named according to the most conspicuous character, Le. spreading like grass in severe winter and bolting with rise in temperature. Besides, it was characterized by dark green, less waxy and delicate leaves. There was clustering of the lower internodes in early stages, resulting in rosette phenotype. This state was persistent till the end of February and as the temperature started rising, the compressed internodes of the mutant started elongatingand attained normal growth like the control plants.