Influence of putrescine and benzyl adenine (BA) on growth and flowering in chrysanthemum (Chrysanthemum morifolium Ramat.)

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Date
2017
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Punjab Agricultural University, Ludhiana
Abstract
The aim of our study was to evaluate the effect of putrescine and benzyl adenine (BA) on vegetative growth, flowering and post-harvest keeping quality parameters in Chrysanthemum morifolium cv. Punjab Shymli. The rooted cuttings of the variety were transplanted in the first week of August in the field and different concentrations of growth regulators were applied after pinching. The total of 7 treatments including putrescine (50, 100 and 150 ppm) and BA (100, 150 and 200 ppm) as well as control were used. In the research, the treatments consist of 3 replications and 25 plants/plot and the experiment was conducted at Research Farm, Department of Floriculture and Landscaping, PAU Ludhiana during kharif season 2016-17. Foliar application of treatments was applied at two different stages, one at bud initiation stage and second at the stage when the flower buds were fully developed. The data on various vegetative, floral and post-harvest parameters was collected and critically evaluated. Application of BA significantly increased floral (days to colour shown, days to flowering, flower diameter, number of branches/plant, cut stem length) as well as post-harvest (vase life, final flower diameter, water absorbed etc.) parameters. BA @ 200 ppm showed the best results in most of the floral and post-harvest characteristics, followed by BA @ 150 ppm. It can be concluded that benzyl adenine (BA) @ 200 ppm was found to be the most effective in delaying the floral parameters and enhanced the vase life of the cut stems of chrysanthemum.
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