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Reduction of generation time in Eucalyptus globulus


Hasan, O and Reid, JB, Reduction of generation time in Eucalyptus globulus, Plant Growth Regulation, 17, (1) pp. 53-60. ISSN 0167-6903 (1995) [Refereed Article]

DOI: doi:10.1007/BF00024495


The plant growth retardant paclobutrazol was applied by foliar spray to seedlings of Eucalyptus globulus (Labill.) to determine its effects on reproductive activity. It was shown to induce flowering in vegetatively juvenile seedlings and increase reproductive activity in vegetatively adult material. The former case represented a 50% (three year) reduction in generation time for commercial seedlings. Paclobutrazol treatment did not appear to have a negative effect on any aspect of reproductive development, germination of new seed, or early seedling growth, while having a distinct positive effect on reproductive output. This suggests that paclobutrazol may be an effective tool enabling tree breeders to reduce generation time and increase reproductive output in E. globulus. Foliar spraying during autumn was shown to be an effective means and timing of paclobutrazol application, with results evident in the following flowering season. Considerable persistence of paclobutrazol effects was noted in the second season after application. Pot size and growth temperatures also play roles in determining the extent of new reproductive activity each season in E. globulus seedlings. © 1995 Kluwer Academic Publishers.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other plant production and plant primary products
Objective Field:Other plant production and plant primary products not elsewhere classified
UTAS Author:Hasan, O (Dr Omar Hasan)
UTAS Author:Reid, JB (Professor Jim Reid)
ID Code:4566
Year Published:1995
Web of Science® Times Cited:30
Deposited By:Plant Science
Deposited On:1995-08-01
Last Modified:2010-11-08

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