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|Advisor:||Kulkarni, Balaji S.|
KULKARNI, M. S.
SHIROL, A. M.
DORAJEE RAO, A. V. D.
|Title:||STUDIES ON EFFECT OF PHOTOPERIOD, GROWTH REGULATORS, PRESERVATIVES AND CHEMICAL MUTAGEN ON CHRYSANTHEMUM (Dendranthema grandiflora Tzevelev.) CULTIVARS|
|Publisher:||K.R.C. COLLEGE OF HORTICULTURE COLLEGE OF ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)|
|Abstract:||Chrysanthemum, a leading commercial flower crop grown for production of cut flowers, loose flowers and potted plants. The present investigation was carried out during the period 2014 to 2016, in the Department of Floriculture and Landscape Architecture, KRC College of Horticulture, Arabhavi, University of Horticultural Sciences, Bagalkot, with the objectives to know the effect of photoperiod, growth regulators, preservatives and chemical mutagen on chrysanthemum (Dendranthema grandiflora Tzevelev.) cultivars. The photoperiod experiment revealed that, 12 h dark and 12 h light photoperiodic module resulted in good vegetative growth (plant height, stem girth, number of leaves per plant, number of branches and plant spread) as well as quality parameters, while 16 h dark and 8 h light produced early flowering in potted and cut chrysanthemum. There was significant variation among the cultivars for growth, flowering and quality plants. Among the potted chrysanthemum cultivars, cvs. Yellow Decorative, Orange Decorative, Yellow Deco, Pink Deco and White Deco, whereas, among the cut chrysanthemum cultivars, cv. White Double were best cultivars. Studies on growth regulators on chrysanthemum revealed that, there was an increase in growth and early flowering by foliar application of gibberellic acid at 150 ppm and brassinosteroid at 0.50 ppm. Whereas, cycocel at 750 ppm and daminozide at 1000 ppm produced maximum number of branches and resulted in delayed flowering. The experiment to improve the vase life revealed that, holding of flower stalks in 2 per cent sucrose solution with 200 ppm 8-HQS, just after the pulsing in 20 per cent sucrose with 200 ppm 8-HQS for 6 h enhanced the vase life of cut chrysanthemum. While, experiment on effect of chemical mutagen showed that, dipping of rooted cuttings of chrysanthemum for 1 h 45 min in EMS (0.70 %) which seems to be LD-50, resulted in maximum abnormalities and mutants in cv. Marigold as compared to cv. Kattiraja.|
|Theme:||STUDIES ON EFFECT OF PHOTOPERIOD, GROWTH REGULATORS, PRESERVATIVES AND CHEMICAL MUTAGEN ON CHRYSANTHEMUM (Dendranthema grandiflora Tzevelev.) CULTIVARS|
|Research Problem:||STUDIES ON EFFECT OF PHOTOPERIOD, GROWTH REGULATORS, PRESERVATIVES AND CHEMICAL MUTAGEN ON CHRYSANTHEMUM (Dendranthema grandiflora Tzevelev.) CULTIVARS|
|Appears in Collections:||Theses|
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