Morphogenesis

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Does a diel cycle shorter than 24h or continuous light positively affect lettuce growth and light use efficiency; is this response genotype dependent?

Vertical Farming is a new model in food production with high water, fertilizer and land use efficiency compared to traditional cultivation. No pesticides are applied and since this novel system allows worldwide ...


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Does light spectrum influence fruit set in sweet pepper?

Fruit set indicates the initiation of fruit growth derived from flowers, and the cessation of this process is termed as abortion. Fruit set is a crucial development process in the plant life cycle, and it is also a main determinant of crop yield. In sweet pepper, up to 80% ...


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Desk study: Is the use of interlighting in greenhouse production beneficial or wasteful?

In modern greenhouse production, plants are often grown in relatively tall, optically dense canopies –think of tomato, cucumber and bell pepper. Often, supplementary lighting installed above the plants (toplighting) is used to ...


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Investigating light spectrum effects of LED inter-canopy lighting in greenhouse tomato.

Vine crops, specifically tomatoes and cucumbers, represent one of the largest segments for electric lighting in horticultural applications. Furthermore, cultivators are constrained by inadequate lighting conditions during winter months ...


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Leaf movement as a sensor of stress in horticultural crops?

Even when there is no wind, some plants show strong leaf movements throughout the day; this is especially well known in leguminous crops (e.g. bean, pea). These movements are linked to internal rhythms (circadian clock) and entrained by day/night and temperature cycles. These cycles ...


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Genotypic effects on vegetative growth of Chrysanthemum under several light spectra

Modern production of chrysanthemum entails the use of supplemental light, which is energy costly. Growers typically produce a large range of chrysanthemum genotypes in the same greenhouse. Also, chrysanthemum goes through three developmental stages during production ...


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Look and listen: Xylem vessel diameter and vase life in flowering chrysanthemum

Plants transport water from the roots to the leaves through a specialized long-distance vascular network, the xylem. The xylem’s properties are important – among others – in drought and pest resilience, and vase life of cut flowers. Importantly, it currently requires destructive and time-consuming ...


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Exploring the mineral uptake and distribution of roses, with focus on the Na uptake

The experiment is part of a project framework dealing with salinity, in particular Na accumulation, in soilless grown greenhouse crops. Currently a large trial is carried out on roses ‘Avalanche’, where we experienced a ...


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Sugar-Based Vertical Farming; can plants use exogenous sugar instead of light for growth?

For thousands of years, humans have used light to fuel plant growth. Since the main barrier to sustainable Vertical Farming is its light-related electricity costs, other models should be considered. We are researchering whether ...


Questions or other ideas for thesis topics? Please contact the HPP student coordinator Katharina Hanika.