ISHS Acta Horticulturae 766: XXVII International Horticultural Congress - IHC2006: International Symposium on Ornamentals, Now!
GIBBERELLIC ACID INDUCED FLOWERING OF PAPHIOPEDILUM (MACABRE × GLANDULIFERUM) |
| Authors: | T.P. Miguel, W.S. Sakai, J. Fang |
| Keywords: | orchids, flower induction, plant growth regulators |
| Abstract:
Because four year old Paphiopedilum (Macabre × glanduliferum) plants with multiple shoots had not flowered, we attempted to induce flowering by use of plant growth regulators. Twenty-five ml of 866 ppm gibberellic acid (GA3) or 500 ppm N6-benzyladenine (BA) or a combination of 866 ppm GA3 + 500 ppm BA or 500 ppm 1-naphthaleneacetic acid (NAA) + 500 ppm BA or 250 ppm NAA + 500 ppm BA was applied as a spray to run-off to the top of the plant with some drenching of the roots, to each of 10 plants in a randomized complete block design. Ten untreated plants served as control. The gibberellic acid treatment resulted in all 10 plants producing an average of 3.8 inflorescences per plant. Controls and plants treated with, BA or BA + NAA did not produce any inflorescence. BA appeared to reduce the effect of GA3 in the combination treatment, with 6 plants producing an average of 3.2 inflorescences per plant. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
