Effect of Physical and Chemical Mutagenesis in Sunflower [Helianthus Annus L.] on Seed Germination through Induced Mutation

Sunflower [Helianthus annus L. ] is an annual plant belongs to the compositae (Asteraceae) family. During present studies, the seed of sunflower varieties Bhanu, and SS-56 were treated with different concentrations of chemical mutagens (0.05 %, 0.10 % & 0.15 % for EMS and 0.01 %, 0.02 % & 0.03 % for SA). The physical Mutagens like Gamma rays were used @ 10KR, 20R & 30 KR. After sowing in Petridis it was found that both varieties of sunflower responded differentially to EMS and Gamma rays treatments in respect of seed germination.