EFFECT OF PHYSICAL AND CHEMICAL MUTAGENS ON DIFFERENT CULTIVARS OF TUBEROSE (POLIANTHES TUBEROSA LINN.) WITH PARTICULAR REFERENCE TO INDUCTION OF GENETIC VARIABILITY

POOJA KAINTURA¹, RANJAN SRIVASTAVA², MANISH KAPOOR³*
¹Department of Horticulture, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, 263145
²Department of Horticulture, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, 263145
³Department of Botany, Punjabi University, Patiala-147002 Punjab
* Corresponding Author : jdmanishkapoor@yahoo.com

Received : 23-02-2016     Accepted : 12-03-2016     Published : 07-05-2016
Volume : 8     Issue : 15       Pages : 1257 - 1260
Int J Agr Sci 8.15 (2016):1257-1260

Keywords : Polianthes tuberosa, Gamma rays, X-rays, EMS
Academic Editor : Dr Ajit Kumar, Dr P M Ajith
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

Four cultivars of tuberose (Polianthes tuberosa Linn.), viz. Kalyani Single, Kalyani Double, Suvasini and Prajwal were used to study the mutagenic effectiveness of various physical and chemical mutagens viz. Gamma rays, X-rays and EMS, by treating the healthy and uniform bulbs of tuberose with different doses each of gamma rays viz., (5, 15 Gy), X-rays (6, 12 Gy) and EMS (0.1, 0.2%) along with the untreated bulbs as control and evaluated for various vegetative and floral characters. The findings of the experiment showed that the treatments of the mutagens at lower doses had significant simulative effect on vegetative parameters viz., sprouting percentage, days to sprouting while the parameter pertaining to survival rate, leaf length, number of spikes per plant, florets per spike, flowering duration and vase life were observed with decreasing trend. Higher doses of all mutagens had detrimental effects on the vegetative and floral characters. Mutants exhibited variation from the parent plant with respect to the vegetative characters.