IMPACT OF GROWTH RETARDANTS ON GROWTH AND FLORAL CHARACTERS OF CHRYSANTHEMUM POTMUMS (Dendranthema grandiflora)

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dc.contributor.advisorDr. R. CHANDRASHEKHAR
dc.contributor.authorB. SHAILAJA
dc.date.accessioned2019-09-11T10:01:36Z
dc.date.available2019-09-11T10:01:36Z
dc.date.issued2016-11-01
dc.descriptionIn the present experiment, fourteen treatments were imposed with 3 replications.The treatments were T1 (Paclobutrazol 30 ppm), T2 (Paclobutrazol 60 ppm), T3(Paclobutrazol at 90 ppm), T4(Daminozide 500 ppm), T5(Daminozide 750 ppm), T6 (Daminozide 1000 ppm), T7 (Ethephon 250 ppm), T8 (Ethephon 500 ppm), T9 (Ethephon 750 ppm), T10 (Ethephon 1000 ppm), T11(Uniconazole 4 ppm), T12 (Uniconazole 8 ppm), T13 (Uniconazole 16 ppm), T14 (Control).en_US
dc.description.abstractThe present investigation entitled “Impact of growth retardants on growth and floral characters of chrysanthemum potmums (Dendranthema grandiflora)”was carried out at floriculture research station, Rajendranagar, Hyderabad during the rabi season of 2015-2016. In the present investigation, an attempt has been made to determine the effect of different growth retardants on growth characters and floral characters of chrysanthemum potmums. The experiment was carried out in Completely Randomized Design. In the present experiment, fourteen treatments were imposed with 3 replications.The treatments were T1 (Paclobutrazol 30 ppm), T2 (Paclobutrazol 60 ppm), T3(Paclobutrazol at 90 ppm), T4(Daminozide 500 ppm), T5(Daminozide 750 ppm), T6 (Daminozide 1000 ppm), T7 (Ethephon 250 ppm), T8 (Ethephon 500 ppm), T9 (Ethephon 750 ppm), T10 (Ethephon 1000 ppm), T11(Uniconazole 4 ppm), T12 (Uniconazole 8 ppm), T13 (Uniconazole 16 ppm), T14 (Control). The data on vegetative growth was recorded on plant height, number of primary branches, plant spread at E-W and N-S, leaf length, leaf width, SCMR value, internodal length, diameter of the main stemand data regarding flowering was recorded on days to 1st flower bud appearance, days to 50% flowering, number of flower stems per plant, number of flowers per stem, number of flowers per plant, peduncle length, flower diameter, weight of the flower, duration of flowering, vase life.The results obtained were stastistically analyzed in CRD. Salient features of the findings are summerized here under. Name of the author : B.SHAILAJA Title of the thesis :“IMPACT OF GROWTH RETARDANTS ON GROWTH AND FLORAL CHARACTERS OF CHRYSANTHEMUM POTMUMS (DENDRANTHEMA GRANDIFLORA).” Degree to which it is submitted : MASTER OF SCIENCE Faculty : HORTICULTURE Discipline : FLORICULTURE AND LANDSCAPE ARCHITECTURE Major Advisor : Dr. R. CHANDRASHEKHAR University : SRI KONDA LAXMAN TELANGANA STATE HORTICULTURAL UNIVERSITY Year of Submission : 2016 The results of experiment regarding vegetative parameters revealed that maximum reduction in the plant height (16.92 cm), plant spread E-W (19.42 cm) and N-S (17.75 cm), maximum SCMR value (74.86) were recorded with application of paclobutrazol at 90 ppm (T3) which was on par with paclobutrazol at 60 ppm (T2). Maximum diameter of main stem (7.73 mm), leaf length (6.26 cm), leaf width (4.41cm) were found in (T6) daminozide at 1000 ppm. Maximum number of primary branches (7.83) were found with (T1) paclobutrazol at 30 ppm and on par with (T9) ethephon at 750 ppm (7.75). Moderate reduction in plant height (24.25 cm), inter nodal length (0.86 cm), plant spread E-W (32.75cm), plant spread N-S (33.50 cm) were recorded with application of daminozide at 1000 ppm. Maximum reduction in internodal length (0.50 cm) was observed in paclobutrazol 60 ppm (T2) and on par with paclobutrazol at 30 ppm (0.54 cm). With respect to floral parameters earliness in number of days to 1st floral bud appearance (75.17 days) was found with application of daminozide 1000 ppm followed by application of paclobutrazol 90 ppm and daminozide 750 ppm. Earliness in 50% flowering (100.00 days) and maximum duration of flowering (68.00), maximum number of flowers per stem (37.66) and number of flowers per plant (217.25) were found with (T6) daminozide at 1000 ppm which was on par with (T5) daminozide at 750 ppm. Maximum number of flower stems per plant (6.83) were observed in (T12) uniconazole at 8 ppm and was on par with (T11) uniconazole at 4 ppm (6.33). Maximum peduncle length (6.91 cm) was observed with (T4) daminozide at 500 ppm. Maximum diameter (3.98 cm) and weight of the flower (1.46 g) were observed in (T10) ethephon at 1000 ppm. Maximum vase life was found with (T4) daminozide at 500 ppm (16.33 days) which was on par with (T5) daminozide at 750 ppm (15.33 days). The moderate growth reduction and increased chlorophyll in chrysanthemum potmums and earliness in flower bud appearance and 50% flowering, highest number of flowers per stem and number of flowers per plant, duration of flowering were observed with apllication of daminozide at 1000 ppm followed by application of daminozide at 750 ppm. These results were attributed to breakdown of gibberellin bio synthesis and suppression of vegetative growth which in turn promotes more buds to differentiate into flower buds with increased mobilization of photosynthates for flowering, which might have resulted in uniform growth and flowering producing higher quality of potted plants.en_US
dc.identifier.citationSri Konda Laxman Telangana State Horticultural University, Rajendranagar, Hyderabad-30en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810127383
dc.keywordsIMPACT OF GROWTH RETARDANTS ON GROWTH AND FLORAL CHARACTERS OF CHRYSANTHEMUMen_US
dc.language.isoenen_US
dc.pages1-138en_US
dc.publisherCollege of Horticulture, Rajendranagar, HYD-30en_US
dc.research.problemIMPACT OF GROWTH RETARDANTS ON GROWTH AND FLORAL CHARACTERS OF CHRYSANTHEMUMen_US
dc.subFloriculture and Landscapingen_US
dc.subjectnullen_US
dc.themeIn the present experiment, fourteen treatments were imposed with 3 replications.The treatments were T1 (Paclobutrazol 30 ppm), T2 (Paclobutrazol 60 ppm), T3(Paclobutrazol at 90 ppm), T4(Daminozide 500 ppm), T5(Daminozide 750 ppm), T6 (Daminozide 1000 ppm), T7 (Ethephon 250 ppm), T8 (Ethephon 500 ppm), T9 (Ethephon 750 ppm), T10 (Ethephon 1000 ppm), T11(Uniconazole 4 ppm), T12 (Uniconazole 8 ppm), T13 (Uniconazole 16 ppm), T14 (Control).en_US
dc.these.typeM.Scen_US
dc.titleIMPACT OF GROWTH RETARDANTS ON GROWTH AND FLORAL CHARACTERS OF CHRYSANTHEMUM POTMUMS (Dendranthema grandiflora)en_US
dc.typeThesisen_US
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