APBI 442 MT Questions with complete
solution
Grapevine:
1. Class
2. Family
3. Genus
4. Features
5. Origin
6. Prominent method of propagation
1. Dicotyledoneae (trees, shrubs, vines, flowers; start lifecycle with 2
cotyledons preformed in seeds)
2. Vitaceae (generally fleshy berries)
3. Vitis
4. - hairy leaves w/ 5 main veins
- forked tendrils
- shredding bark
- nodes w/ diaphragms
5. Temperate zones of NH
,6. Vegetative (root from dormant cuttings)
Wild Vitis species are (1.)______ (mono-/dioecious). Cultivated Vitis species
are (2.)______ (mono-/dioecious). Members are (3.)_______ (fertility) and all
can be (4.)_____ into each other.
1. dioecious (imperfect; male or female flowers)
2. monoecious (perfect; hermaphroditic)
3. interfertile
4. grafted
American vs. Eurasian grapeveines
AMERICAN
- thinner shoots
- longer internodes
- less prominent nodes
- no sinuses (continuous border)
- important as rootstocks
EURASIAN
- thicker shoot
- shorter internodes
- more prominent nodes
- big sinuses (inlets in leaf border)
,Which grapevines (American/Eurasian) are used as rootstocks? Why?
- American grapevines
- American species resistant to aphid-like pest phylloxera (D. vitifoliae)
Domesticated vs. wild forms
DOMESTICATED
- V. vinifera
- more leaves
- monoecious
- more clustered berries
- oval seeds
WILD
- V. sylvestris
, - less leaves
- dioecious
- less clustered berries
- round seeds
Vitis vinifera vs. American spp.
1) Better fruitfulness
2) Better fruit quality
3) More useful
4) Greater propagation capacity
5) Greater lime tolerance
6) Greater phylloxera tolerance
7) Better disease resistance
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