Effects of removal of young leaves and cytokinin on inflorescence development and bract enlargement in bougainvillea glabra var. "Elizabeth Angus"

Moneruzzaman, K.M. and Amru, N.B. and Sani, W. and Saifuddin, M. and Normaniza, Osman and Hossain, A.B.M.S. (2010) Effects of removal of young leaves and cytokinin on inflorescence development and bract enlargement in bougainvillea glabra var. "Elizabeth Angus". Australian Journal of Crop Science, 4 (7). pp. 467-473. ISSN 1835-2693

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Abstract

A study was carried out to investigate the effects of removal of young leaves and different concentrations of cytokinin on inflorescence and bract quality development of Bougainvillea. Selected horticultural parameters were monitored at three days interval during the experimental period, using different concentrations of cytokinin with defoliation of young leaf. Results revealed that de-foliation with or without citokinin greatly increased the amount of assimilate accumulated at the reproductive shoot tip thus reduced vegetative growth but promotes inflorescence development. It was observed that 50mg/L cytokinin with defoliated twig produced highest number of bract, excellent blooming rate, enlarging the bract length and increase the bract longevity from other treatments and control. Furthermore, 50mg/L cytokinin plus defoliated branch produced the highest chlorophyll fluorescence and quantum yield. On the other hand, cytokinin 100mg/L treatment in defoliated plant increased the weight of individual bract and bracts including flower. Control treatment increased the stem elongation and enhanced the vegetative growth only. From this study, it can be concluded that defoliation of young leaf and cytokinin 50mg/L treatment enhanced inflorescence development and improve the quality of Bougainvillea bracts.

Item Type: Article
Additional Information: Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Bougainvillea; bract quality; inflorescence; defoliation and cytokinin
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Miss Malisa Diana
Date Deposited: 02 Jul 2013 02:01
Last Modified: 13 Nov 2019 06:59
URI: http://eprints.um.edu.my/id/eprint/6260

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