Viticulture Flashcards
Which wild species does vinifera came from in early days
Vitis Silvestris
What are Lianas
Plants that do not produce wood for support, but are rather structural parasites, example grapevine
What are phototrops
Plants that seek the sun. They grow tall shoots and leaves to attract higher ratio of sunlight
What is dioecious
Plants where both male and female plants exist and are needed to grow close together for pollination
What is hermaphroditic plant
Plants that can self pollinate
What is a scion
The main vinifera bud above ground, connnected to a rootstock that grown underground
What are lignified shoots
The shoots that turned brown after the first winter and became permanent wood
What are spurs
Canes that are pruned for fruiting buds to grow from
What are internodes
Portion of stem between two nodes is called internode
Which grape is known to produce three clusters per shoot
Carignan
What is rachis
stem of the cluster is called rachis
What are inflorescences
flower clusters that resemble immature grapes
What is a bloom
A waxy coating on the berries that protects the fruit and collects the yeast
What is Ampelography
Science of identifying grape varieties based on berry size, looks of leaves and growth patterns of plants
Where does photosynthesis occur
Primarily in leaves but may happen in any green tissue of the plant
What is Xylem
veins that carry water in the plants
What is Phloem
Veins that carry sugar from the leaves to the plant
What is adenosine triphosphate, or ATP
A reaction that converts sugar into usable energy in plants, happens using oxygen, 24 hours a day
What are the challanges with shaded buds
Shaded buds develop into less productive shoots, reducing the overall quantity of fruit over time
What is Ravaz index
the ratio of fruit weight to pruning weight in a vine. Ratio of 4 to 10 are considered balanced
What is the optimum internodes size
three to four inches