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Designation for the leaf area; see under .

Leaves are the energy power plants of green plants and, alongside the roots, the most important nutritional organs. In vines, they form as lateral outgrowths on the nodes (nodes) of young growing shoots, just like the eyes, tendrils and inflorescences (shoots or later grapes). As the shoot tip grows in length, new leaves branch off continuously and develop in a variety-specific manner. With the help of leaf pigments such as chlorophylls, carotenoids and flavonoids, solar energy is absorbed by the leaves and converted into energy-rich glucose (grape sugar) and oxygen during photosynthesis using carbon dioxide and water. The carbon dioxide required for this is absorbed from the air through the stomata (stomata), usually on the undersides of the leaves. The oxygen produced during the day escapes to the outside through these small stomata.

Triebe - Zeichnung mit 1 bis 7

1 = basal leaves without tendrils, 2 = grape, 3 = tendril, 4 = internode, 5 = shoot tip, 6 = nodes with grapes or tendrils, each with a leaf opposite, 7 = node without grape or tendril.

Evapotranspiration & guttation

Due to the water vapour saturation deficit in the air, every plant cell constantly loses water, which evaporates into the air. This complex process is called transpiration (the evaporation of water on unvegetated or open land or water surfaces, on the other hand, is called...

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Spread

Leaf

Evapotranspiration & guttation

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