ven2lec7_(vinecycle)

Ven2lec7(vinecycle) - VEN 2 Cycle of Vine Growth and the Development of Buds Reading in Biology of the Grapevine pp 37 to 77 Phenology Definition

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VEN 2 Cycle of Vine Growth and the Development of Buds
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Reading in “Biology of the Grapevine”: pp. 37 to 77
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Phenology Definition : The sequence of events or growth stages of plants or animals that recur seasonally and their relation with various climatic factors including temperature, sunlight and daylength.
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Major phenological events of grapevines Budbreak Bloom (flowering or anthesis) Berry set Veraison Harvest (fruit maturity) Leaf fall Vine dormancy
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Generalized scheme of the development of various organs of the vine during the current growing season and bud development (production of next year’s shoots and fruit).
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An individual 3-bud spur of Perlette grapevines. The spur is atop an arm. Buds Arm
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Thompson Seedless grapevines early in the season. The vines were cane pruned, leaving approximately 12 to 15 buds per cane. Canes
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Compound bud Leaf scar Lateral Shoot Scar
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Close up of compound bud covered with bud scales.
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Transverse section through compound bud.
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Primary Bud Bud Scales
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Morphology of the apex of the primary bud
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Bud Swell
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Shoot growth shortly after budbreak
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New shoots growing from buds located at the end of a cane
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Apical tip of the shoot
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Relative shoot length and canopy size of Thompson Seedless grapevines at flowering.
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When shoots get too long (heavy) they will fall.
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Vines at full canopy. The canopy will probably not get larger as shoots will be cut in order to drive a tractor down the row.
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Vineyard in western Kern County at full canopy
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A grapevine shoot will continue to grow as long as there is an ample supply of water and something to support its weight.
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After harvest, as the weather turns cooler and daylength shortens, leaves will turn from green to yellow and fall from the vine.
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After leaf fall, the dormant vine will pruned.
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Phenological stages according to Eichhorn & Lorenz.
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FI 43 μm Stage 8
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This note was uploaded on 09/29/2010 for the course VEN 81437 taught by Professor Larrywilliams during the Fall '10 term at UC Davis.

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Ven2lec7(vinecycle) - VEN 2 Cycle of Vine Growth and the Development of Buds Reading in Biology of the Grapevine pp 37 to 77 Phenology Definition

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