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Abstract Detail



Diversity and Development in the Vitaceae - More than Wine Grapes

Posluszny, Usher [1].

A re-examination of phenologies in the Vitacaeae .

Phenology in the Vitaceae has primarily focused on the genus Vitis and its various cultivars, which have been associated with the viticultural industry. The purpose and primary function of precisely identifying phenological stages in Vitis is to correlate the timing of specific stages with external and cultural factors such as climate, predation and disease control. There are many publications devoted to the identification of growths stages for the commercial grapevine (reviewed by Coombe, 1995) but none have paid much attention to the fact the grapes like most temperate woody plants are proleptic. That is, the lateral axillary branch in the grapevine demonstrates discontinuous growth, with an intervening period of rest. Some of the development that will produce this year’s grapes occurs during last year’s formation of axillary buds. We followed the development of the North American native grape, Vitis riparia, over a two-year growth cycle in order to produce a phenology that recognizes the proleptic nature of most temperate grapes. Of course, the Vitaceae also has many tropical genera where the growth and development of lateral branches is primarily sylleptic. In these genera the lateral branch, usually floral, develop without an evident intervening period of rest. Examples of phenologies from several tropical genera, including Tetrastigma, Cyphostemma and Cissus, will be discussed.

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1 - University of Guelph, MOLECULAR AND CELLULAR BIOLOGY, 50 STONE ROAD EAST, GUELPH, ON, N1G 2W1, Canada

Keywords:
Vitaceae
phylogeny
grapevine
proleptic
sylleptic.

Presentation Type: Symposium or Colloquium Presentation
Session: SY07
Location: Prince of Wales/Riverside Hilton
Date: Tuesday, July 30th, 2013
Time: 4:15 PM
Number: SY07007
Abstract ID:317
Candidate for Awards:None


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