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Effect of gibberellic acid on growth and flowering in Chrysanthemum morifolium Ramat cvs. Thai Chen Queen and Snowball

KrishiKosh

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Title Effect of gibberellic acid on growth and flowering in Chrysanthemum morifolium Ramat cvs. Thai Chen Queen and Snowball
M Sc
 
Creator Aparna Veluru
 
Contributor M.C. Singh
 
Subject ---
 
Description T-8646
Plant growth and flower quality of chrysanthemum, planted under short day conditions was influenced by gibberellic acid sprayed at three different concentrations (200 mg/l, 300 mg/l and 400 mg/l) after 15days of transplanting of the uniform self rooted plugs. Observations were recorded at 30th, 45th and 60th day of treatment. Vegetative growth characteristics like plant height (63.79 and 45.1 cm), inter-nodal length (2.6 and 2.28 cm), and leaf number (37 and 28) were superior in GA3 treated plants when compared to the plant height (47.1 and 28.6 cm), internodal length (2.1 and 1.45 cm) and leaf number (28 and 23) of the control. Plant fresh and dry weights, LAI, CGR, and NAR were improved in treated plants. Application of GA3 at 400mg/l resulted a significant increase in total chlorophyll (1.77mg g -1 FW) and carotenoid (1.75 mg g -1 FW) contents in cvs. Snowball and Thai Chen Queen as compared to the control. Gibberellic acid application enhanced early bud induction and bud diameter which was recorded maximum at 400 mg/l (1.71cm). A significant increase in flower diameter, fresh weight and dry weights of the flowers was recorded in GA3 treated plants at all the concentrations compared to untreated plants.
 
Date 2016-09-16T16:39:30Z
2016-09-16T16:39:30Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/77137
 
Format application/pdf
 
Publisher IARI, DIVISION OF FLORICULTURE AND LANDSCAPING