The ornamental geophyte Tulipa gesneriana is the most cultivated bulbous species in the Netherlands. It is widely grown in the field for vegetative propagation purposes and in greenhouses for the production of high quality cut flowers. Over the last decade, the tulip bulb industry is affected by the rapid climate change the world is facing. Tempera...
The aim of this online course is to explain the basic mechanisms of photosynthesis.
A more rapid increase in night-time temperature compared with day-time temperature and the increased frequency of heat waves associated with climate change present a serious threat to rice (Oryza sativa L.) production and food security. This thesis aims to understand the impact of high night-time temperature (HNT) and high day-time temperature (HDT...
Nitrogen (N) fertilizers increased food production over the last 60 years, but also contributed significantly to the use of fossil energy and the total amount of reactive N in the environment. Agriculture needs to reduce N input and increase nitrogen use efficiency (NUE). Legislation like the Nitrate Directive (91/767/EEC) and the Water Framework D...
The interest of research groups in desiccation tolerance (DT) has increased substantially over the last decades. The emergence of germinated orthodox seeds and resurrection plants as main research models has pushed the limits of our knowledge beyond boundaries. At the same time, new questions and new challenges were posed. The work presented in thi...
De toepassing van LED-belichting in de glastuinbouw staat nog in de kinderschoenen. Enkele bedrijven zetten al LED’s in, vooral rode en blauwe. Over hoe de verschillende lichtkleuren precies uitwerken op de fysiologie van de plant, is nog maar weinig bekend. Een onderzoek van Wageningen UR Glastuinbouw laat zien dat blauwe en groene LED’s kunnen wo...
Keywords: cell division, endoreduplication, cell expansion, cyclin, cyclin dependent kinase, growth theory, systems biology. Okello, R.C.O (2015) Multi-level analysis of the impact of temperature and light on tomato fruit growth. PhD thesis, Wageningen University, Wageningen, The Netherlands, 166 pp, with English and Dutch summaries. Tomato fruit g...
Eigenlijk is een bol gewoon een plant met een wat eigenaardige vorm. De meeste processen verlopen hetzelfde. Maar waarom gaat die vermeerdering zo langzaam? En hoe kan het, dat een prachtige bol toch een slechte bloei geeft? Tijd voor meer inzicht in de fysiologie van de bloembol.
Planten halen nutriënten normaal gesproken binnen via hun wortels. Het opname- en transportsysteem is daar volledig op ingericht. Bij bemesting via het blad is er niet zo’n gestroomlijnde route. Dat maakt het resultaat van bladbemesting erg wisselend. Immobiele elementen blijven snel steken bij de plek waar ze terecht zijn gekomen.
Summary All plants are able to respond to changes in their environment by adjusting their morphology and metabolism, but large differences are observed in the effectiveness of these responses in the light of plant fitness. Between and within species large differences are observed in plant responses to drought, heat and other abiotic stresses. This ...
