Kapoor, Ajit KumarNayak, Akansha2022-10-092022-10-09https://krishikosh.egranth.ac.in/handle/1/5810188702The present investigations entitled “Evaluation of Newly Evolved Varieties of Chrysanthemum for Pot Mum Production under Tarai conditions” was carried out at Model Floriculture Centre, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, during 2021-22. In the present investigation, 12 chrysanthemum varieties namely Pusa Sona, Ajay, Pusa Aditya, DFRC-2, DFRC-3, IIHR 4-8, IIHR 2-16, NBRI Kusum, Punjab Mohini, Mother Teresa, Bidhan Mansi and Bidhan Chitra collected from different institutes were evaluated in Completely Randomized Block Design (CRD) with three replications. All varieties differed significantly with each other with respect to vegetative and flowering parameters. Maximum plant height at 30 days after planting (52.10 cm) was seen in Ajay and minimum (10.97 cm) in Mother Teresa, whereas the plant height after 60 days of planting varied from 14.00 cm (Punjab Mohini) to 55.77 cm (Ajay) and plants height after 90 days of planting ranged from 17.44 cm (Punjab Mohini) to 54.30 cm (Ajay). There was huge variation in plant spread in various genotypes. DFRC-2 had maximum plant spread both in N-S and E-W directions (31.87 and 23.13 cm, respectively) and Ajay had minimum plant spread both in N-S and E-W directions (7.97 and 6.36 cm, respectively). Maximum numbers of ray florets (268.67) were seen in Ajay and minimum (21.46) in IIHR4-8. Genotype Mother Teresa was earliest to initiate flower buds (58.67 days) while it was delayed most (90.07 days) in IIHR4-8. Maximum flower diameter (6.80 cm) was seen in DFRC-2 and minimum (2.42 cm) in Mother Teresa. Bidhan Mansi had maximum flower retention (43.83 days) whereas, IIHR 4-8 had minimum (20.93 days). Maximum incidence of pest and disease was seen in IIHR 4-8 and IIHR 2-16. From the above observations, it can be concluded that Punjab Mohini was best for pot mum production with pot presentability score of 90.71 out of 100, followed by Bidhan Chitra (90.62/100) and Bidhan Mansi (90.47/100) while IIHR4-8 was least suitable for pot mum with score of 65.11.EnglishThesis