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20161
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Subject: Floriculture and Landscaping × Author: ABROL, AMITA × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    EFFECT OF GROWTH REGULATORS ON POTTED CHRYSANTHEMUM (DendranthemagrandifloraTzvelev) UNDER DIFFERENT PHOTOPERIODIC CONDITIONS
    (UHF,NAUNI, 2016) ABROL, AMITA; DHIMAN, S.R.
    ABSTRACT The present investigation entitled, “Effect of growth regulators on potted chrysanthemum (Dendranthemagrandiflora Tzvelev) under different photoperiodic conditions” was carried out at the experimental farm of Department of Floriculture and Landscape Architecture, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P) during 2014-2015 under controlled and natural photoperiods in six inch plastic pots in naturally ventilated polyhouse. The experiment was laid out in a Completely Randomized Design (factorial) consisting of two cultivars i.e. ‘Ajay’ and ‘UHFSChr-Collection 1’ and seven growth regulator treatments i.e. control (distilled water), paclobutrazol (60 and 90 ppm), daminozide (2500 and 3000 ppm) and ethephon (500 and 750 ppm) and replicated thrice. In general, controlled photoperiod, when applied was found better for flowering over natural photoperiod. Flowering was observed much earlier under controlled photoperiod (142.60 days) with improved quality of plants as compare to natural photoperiod (169.20 days). Findings revealed that for the best quality pot mum production of chrysanthemum cultivar ‘Ajay’, the pot should be sprayed with60 ppm paclobutrazolafter one week of pinching. However the pots of ‘UHFSChr-Collection 1’ under natural photoperiod should be sprayed withdaminozide 3000 ppmand undercontrolled photoperiod sprayed withpaclobutrazol 60 ppmfor highest quality pot mum production.