Manipulation of flowering and vegetative growth of Brown Boronia (Boronia megastigma Nees.) and White Myrtle (Hypocalymma angustifolium Endl.) using plant growth regulators

Harvest of the cut fiower crop, Boronia heterophylla F. Muell., is restricted to a 2-week period in early spring. Extension of the fiowering period by plant growth regulators was examined in plants growing in the field under standard, commercial production conditions. Flowering time, and hence harvest date, were delayed by 6{9 days following the application of gibberellic acid and benzyl adenine (GA4+7+BA). High concentrations of GA4+7+BA (40, 80 mg/L) delayed flowering longer than 20 mg/L, but reduced flower number. BA alone (4 applications of 20, 50, or 100 mg/L) reduced flower number and did not aflect harvest date. GA3 (4 applications of 20 mg/L) prevented flowering. Paclobutrazol (100 mg/L) reduced flower number and delayed flowering by 4 days. The timing of applications at the commencement of flower-promoting conditions, when plants had been exposed to 10-20 nights of temperatures <10˚C (mid autumn), appeared to be critical. A delay of harvest of 6 days is a 40% extension of the harvest period but this may not be sufficient for commercial production.

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Physiological Responses of Maize Plants (Zea mays L.) To Foliar Application of Morphactin CF125 and Indole-3-butyric Acid

Amin¹,

.²,

Gharib³

2006

J. of Biological Sciences

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Manipulation of flowering and vegetative growth of Brown Boronia (Boronia megastigma Nees.) and White Myrtle (Hypocalymma angustifolium Endl.) using plant growth regulators

Cited by 3 publications

References 11 publications

Benzyladenine Promotes Flowering in Doritaenopsis and Phalaenopsis Orchids

Benzyladenine Promotes Flowering in Doritaenopsis and Phalaenopsis Orchids

Plant growth regulators cannot be used to alter significantly the commercial harvest date of Boronia heterophylla F. Muell. (Rutaceae)

Physiological Responses of Maize Plants (Zea mays L.) To Foliar Application of Morphactin CF125 and Indole-3-butyric Acid

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