Pooja Kaintura, Yachna Gupta and Geeta Gaur

Mutagenic effectiveness of EMS was studied on four cultivars of tuberose (Polianthes tuberosa Linn.) cv. Kalyani Single, cv. Kalyani Double, cv. Suvasini and cv. Prajwal by treating them with 2 doses of EMS (0.1%, 0.2 %) .The findings indicated that there was significant morphological variation related to floral character in cultivar prajwal and Suvasini treated with EMS (0.1%, 0.2 %). The findings indicated that mutagenic treatments with lower doses EMS lower doses (0.1%,) resulted in increase in floral size of few florets within a spike.