Auswirkungen von Mykorrhizainfektion, Stickstoff- und Schwefeldüngung und Wasserversorgung auf die Zusammensetzung und den gesundheitlichen Wert von chinesischen Allium-Gemüsearten

Allium species are an important part of the daily diet for many people in the world, in particular also in most parts of China. Allium plants contain phytochemicals with potential beneficial effects for human health. Mineral nutrition and water supply can have effects not only on growth and yield, bau also on the composition of plants. Thus, concentration and content of many plant compounds related the human health can also be influenced byf ertilisation or irrigation. Mycorrhizal colonisation can increase phosphorus uptake of plants, but in addition to that affects also the uptake of other elements such as nitrogen, and induces physiological changes in the plant. In the present project, the effect of supply of different nitrogen forms (ammonium, nitrate, organic nitrogen), of sulfate of different levels, of water supply, and of mycorrhizal colonisation is investigated in factorial experiments under controlled conditions, using garlic and other Allium plants.