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| Decleir, W.; Vos, J.. |
| The most striking phenomenon in the physiology of <i><i>Artemia</i> salina</i> L. is the diapause phase under the form of a cyst in the gastrula stage. Thus for example, can dried cysts resist to extreme stress conditions, without affection of their hatchability after hydration. They withstand complete dehydration exception made for some traces of residual water (Whitaker, 1940); they resist to a temperature of 100°C for more than an hour (Hinton, 1954) , and can be kept at the absolute zero temperature for an indefinite period (Skoultchi and Morowitz 1964). Eventhough hydrated cysts are less tolerant of these "extravagant" conditions, they nevertheless are only slightly sensitive to anoxia for periods up to 5 months (Dutrieu,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia salina. |
| Ano: 1977 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3556 |
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| Fournier, C.; Andrieu, B.; Buck-Sorlin, G.; Evers, J.B.; Drouet, J.L.; Escobar-Gutiérrez, A.J.; Vos, J.. |
| The Gramineae have been a pioneer group among non-woody plants to be modelled with the approach of functional-structural plant modelling (FSPM). During the past decade, models have focussed on morphological aspects of plant development. They now provide crop scientists with general guidelines for building new cereal models. We present some of them here, considering the different aspects of cereal architectural modelling: plant development, pattern formation and plant geometry. We also review some significant examples that illustrate the different types of uses of these models for agronomic research. We conclude that the next generation of cereal models should be based on a less empirical modelling of the processes that control morphogenesis. |
| Tipo: Conference proceedings |
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| Ano: 2007 |
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1381 |
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| Evers, J.B.; Vos, J.. |
| Tillering in wheat (Triticum aestivum L.) is influenced by both light intensity and the ratio between the intensities of red and far-red light. The relationships between canopy architecture, light properties within the canopy, and tillering in spring-wheat plants were studied using a 3D virtual plantmodelling approach. The advantage of virtual plant models is that each element in the architecture of the canopy is given an explicit 3D representation, which enables simulation of processes at the level of individual organs. The model used, called ‘ADELwheat’, was calibrated for spring wheat. The model was validated for ground cover and leaf area index, using an independent dataset. Experimentally, it was shown that new tillers ceased to appear when the... |
| Tipo: Conference proceedings |
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| Ano: 2007 |
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1307 |
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| Vos, J.; Marcelis, L.F.M.; Evers, J.B.. |
| The role acquired by modelling in plant sciences includes integration of knowledge, exploration of the behaviour of the plant system beyond the range of conditions covered experimentally and decision support. The purpose of the model determines its structure. Initially process-based models (PBM) were developed separately from structural (or: architectural or morphological) plant models (SPM). Combining PBMs and SPM into functional-structural plant models (FSPM) or virtual plants has become feasible. This adds a dimension to classical crop growth modelling. FSPM are particularly suited to analyse problems in which the spatial structure of the system is an essential factor contributing to the explanation of the behaviour of the system of study. Examples... |
| Tipo: Conference proceedings |
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| Ano: 2007 |
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1367 |
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