Indian Institute of Horticultural Research, Bangalore
*Present Address: Division of Floriculture and Landscaping, Indian Agricultural Research Institute, Pusa, New Delhi-110012.
A field trial experiment was conducted on Jasminum grandiflomm L. in a randomised block design to study the effect of spray application of CCC and B-Nine at 1000, 2500 and 5000 ppm of each, twice at the vegetative stage. There was significant reduction of shoot length and appreciable increase in the basal diameter of the sprayed shoots over the control with all the treatments of growth retarding chemicals. The largest number of shoots were obtained with CCC at 1000 ppm and the treatment with B-Nine ranked the next. Treatment with CCC induced early onset of flowering by 7.0 to 8.5 days. Application of chemicals shortened the corolla tube length, stimulated the flower bud length, accelerated the flower diameter and improved the yield of flowers. Significant increase in flower yield over the untreated control, was however, recorded with CCC at 1000 ppm and 2500 ppm, and B-Nine at 5000 ppm; and the percentage of increase due to these treatments were 23.78, 11.17 and 29.48 respectively.
