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Grape cluster architecture. The placement of a cluster on the vine is similar to that of a tendril, [3] as both develop from the same uncommitted primordia, the anlagen. The grape bunch position on the side of the stem opposing a leaf is unusual for inflorescence of the plants. [2] The typical shape of a cluster depends on the grape variety. [4]
The bud of a Regent vine located between the stem and petiole.. The grape starts its annual growth cycle in the spring with bud break. In the Northern Hemisphere, this stage begins around March while in the Southern Hemisphere it begins around September when daily temperatures begin to surpass 10 °C (50 °F).
A hybrid is a new grape variety that was produced from a cross pollination of two different grape species. In the early history of American winemaking , grape growers would cross the European Vitis vinifera vines with American vine varieties such as Vitis labrusca to create French-American hybrids that were more resistant to American grape ...
During the annual growth cycle of the grapevine, excessive shading can reduce the success rate of bud formation, budbreak, fruit set as well as the size and quantity of grape berries on a cluster. [1] The grape clusters receive some benefit from receiving direct sunlight through enhanced ripening of various phenolic compounds that can ...
A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus Vitis. Grapes are a non-climacteric type of fruit, generally occurring in clusters. The cultivation of grapes began approximately 8,000 years ago, and the fruit has been used as human food throughout its history.
Vitis labrusca, the fox grape, is a species of grapevines belonging to the Vitis genus in the flowering plant family Vitaceae. The vines are native to eastern North America and are the source of many grape cultivars , including Catawba , Concord , Delaware , Isabella , Niagara , and many hybrid grape varieties such as Agawam , Alexander and Onaka .
Multi-fruits, also called collective fruits, are fruiting bodies formed from a cluster of flowers, the inflorescence. Each flower in the inflorescence produces a fruit, but these mature into a single mass. [1] After flowering, the mass is called an infructescence. [2] [3] Examples are the fig, pineapple, mulberry, osage orange, and jackfruit.
A grape cluster with signs of millerandage with small, immature berries scattered throughout the bunch.. Millerandage (or shot berries, hens and chicks and pumpkins and peas) is a potential viticultural hazard in which grape bunches contain berries that differ greatly in size and, most importantly, maturity.