ven2lec2_(taxonomy)

ven2lec2_(taxonomy) - VEN 2 Introduction to Viticulture Dr...

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VEN 2 Introduction to Viticulture
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Dr. Larry E. Williams Dept. Viticulture & Enology University of California – Davis and Kearney Agricultural Center 9240 S. Riverbend Ave. Parlier, CA 93648 e-mail – [email protected] e-mail – [email protected]
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L.E. Williams’ Office Hours Office : 2144 RMI (it is on the second floor). RMI is located on the south side of campus, near the Mondavi Center for Performing Arts, out by Interstate 80. Office Hours -- Monday: 4:00 to 5:30 pm Wednesday: 10:00 to 11:45 am
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Utilization of grapes and their products Unprocessed – Table grapes (fresh/stored) Processed : Raisins (dried grapes) Wine (fermented juice) Grape Juice (pasteurized/non-fermented) Distilled spirits (brandy, cognac, ethanol) Concentrate (used in food products) Jellies or Jams
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Taxonomy of grapevines Taxonomy : the science of the classification of living things Systematics : study of the classification of plants with emphasis on their evolutionary relationships
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Karl von Linne (Carolus Linnaeus) Late 18 th century Swedish physician revolutionized plant classification and is the designated as the founding father of taxonomy and systematics. His system of naming organisms is called the BINOMIAL SYSTEM.
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Binomial system of Linnaeus : Plant names are in two parts 1.) Genus 2.) Species So for grapevines: Vitis vinifera L. ( Old world or European vine ) Vitis rupestris SCHELLE (A native North American species of grape used as a rootstock)
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Taxonomy of the Grapevine Kingdom: Plant Division: Tracheophyta ( vascular plants ) Sub-division: Spermatophyta ( seed plants ) Class: Angiospermae ( flowering, enclosed ovules ) Sub-class: Dicotyledonae ( 2 cotyledons ) Order: Rhamnales ( 7 familes, mostly vine-like ) Family: Vitaceae ( grapevine family, 10 genera ) Genus: Vitis ( about 60 species ) Species: vinifera ( the cultivated, European, or old world vine )
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Classification of Grapevines in North America Family: Vitaceae Genera: A. Vitis (~ 60 species worldwide) 1.) Coiling tendrils 2.) Forked tendrils 3.) Discontinuous tendrils (except V. labrusca ) 4.) Calyptra present 5.) Mostly dioecious (male and female flowers on separate plants) (however, most V. vinifera cultivars have hermaphroditic flowers)
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Classification of Grapevines in North America Family: Vitaceae Genera – A. Parthenocissus : Clinging vines (Boston Ivy) B. Ampleosis : Ornamental vines (Pepper Vine) C. Cissus : Succulent desert plants (Marine Ivy, C. incisa ) D. Muscadinia : “Muscadine grape)
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Differences between the genera Vitis and Muscadinia Vitis Muscadinia Lenticels Absent Present
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