1 - The grapevine Flashcards
What is the primary goal of a grapevine?
The primary goal of a grapevine is to produce grapes sweet enough to attract birds and animals, which then eat the fruit and disperse the seeds, ensuring the propagation of new vines.
Why do grapevines need an extensive and deep root system?
Grapevines need an extensive and deep root system to compete for water and nutrients in dense woodland environments and to survive in their natural habitat.
How do growth conditions in one year affect the grapevine’s fruit production in the next year?
In summary, the previous season’s growing conditions directly affect the development of the vine’s buds, nutrient reserves, wood maturity, and overall health.
All these factors collectively determine the quantity and quality of the fruit produced in the current season. This cyclical dependency is why vineyard managers must always plan and nurture their vines with an eye on the future.
- Bud development (formed previous year)
- Flower cluster formation (within the bud)
- Nutrient storage supporting the initial growth
- Wood maturity (water and nutrient transport)
- Stress response (more resources to fruit prod.)
What is Vitis vinifera?
Vitis vinifera, also known as the European Vine, is the species of grapevine most commonly used for winemaking.
Why are new vineyards never planted from seeds?
Each seed can produce a vine that is genetically different from the parent vine, which means it may not have the same desirable characteristics (such as flavor, resistance to disease, and growth habits). This genetic variability can result in a higher likelihood of producing sterile seeds.
What is the ‘green part’ of a grapevine called?
Canopy
Including leaves, shoots, and clusters.
What is the main function of grapevine leaves?
The main function of grapevine leaves is to produce energy for the plant through photosynthesis by converting sunlight, carbon dioxide, and water into sugars and oxygen.
What is a hybrid grapevine?
A hybrid grapevine is a cross between different species of the genus Vitis (vinifera and non-vinifera), created to combine desirable traits such as disease resistance and climate adaptability.
How does a cool, damp climate during flowering affect grapevines?
A cool, damp climate during flowering can result in reduced fruit production because it negatively affects the development of flower clusters.
What are mycorrhizal fungi and how do they benefit grapevines?
Mycorrhizal fungi are beneficial organisms that live in the soil and help grapevines by increasing their root absorptive capacity, allowing them to access more nutrients and water.
