Assessment of Growth and Bulb Attributing Characters Influenced by Different Doses of EMS in Tuberose

The present investigation entitled assessment of growth and bulb attributing characters influenced by different doses of EMS in tuberose was conducted at Horticulture Research Farm, Department of Horticulture, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi during 2022- 2023.The experiment was laid out in Randomized Block Design with three replications. Bulbs of twenty tuberose varieties were treated with 600 ppm and 1200 ppm of EMS concentration along with untreated bulbs (control). The data on growth parameters indicated that early sprouting was found in treatment of EMS @ 600 ppm than control and higher concentration of chemical mutagen. Plant height and number of leaves/plants were decreased with the higher concentration of EMS and maximum plant height and number of leaves were recorded in control. In general, there was significant rise in weight of bulb and bulbils in all varieties treated with higher dose of EMS as compared to untreated bulbs (control). The chemical mutagen EMS @ 600 ppm was found effective for weight of bulbils/hill and resulted in maximum number of bulbils. The number of bulbils/hill and diameter of bulb were adversely affected due to higher concentration. Maximum number of bulbils/hill and diameter of bulb were recorded with untreated bulbs (control). However, weight of bulb/hill was positively influenced by higher dose of EMS. Varieties Arka Nirantara, Prajwal and Bidhan Snigdha were resulted in positively growth in all yield attributes whereas, among the varieties Vaibhav found more sensitive to EMS treatment and resulted in very poor performance in all growth and bulb attributes.