Modelling diurnal nitrate uptake in young tomato (Lycopersicon esculentum Mill.) plants using a homoeostatic model
| Autor: | R. Cárdenas Navarro, S. Adamowicz, P. Robin |
|---|---|
| Přispěvatelé: | Unité d'Écophysiologie et horticulture, Institut National de la Recherche Agronomique (INRA), UR 0739 Unité d'Écophysiologie et horticulture, ProdInra, Archive Ouverte, Unité d'écophysiologie et horticulture, International Society for Horticultural Science (ISHS). INT., ProdInra, Migration |
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: |
[SDE] Environmental Sciences
0106 biological sciences [SDV]Life Sciences [q-bio] feedback tomato 01 natural sciences NO3 Lycopersicon tomate diurétique homeostasis rétroaction [SDV.BV] Life Sciences [q-bio]/Vegetal Biology NO3 assimilation rate nitrate uptake nitrate content ComputingMilieux_MISCELLANEOUS water content Nitrate uptake biology diuretics chlorothiazide croissance des plantes food and beverages 04 agricultural and veterinary sciences efflux [SDV] Life Sciences [q-bio] RGR Horticulture reduced N content [SDE]Environmental Sciences lycopersicon esculentum adaptation homéostatique growth feedback regulation teneur en eau NO3 content modelling prolonged darkness nitrate uptake cost influx Mill [SDV.BV]Life Sciences [q-bio]/Vegetal Biology nutrient distribution modélisation model moisture level biology.organism_classification modèle prédictif reduced N dilution Agronomy NO3 uptake rate 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science 010606 plant biology & botany |
| Zdroj: | 2. International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation 2. International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation, Aug 1997, Wageningen, Netherlands Acta Horticulturae 2. International Symposium 2. International Symposium, Aug 1997, Wageningen, Netherlands 2. International Symposium on Models for Plant Growth, Environmental Control and Farm Management in Protected Cultivation, International Society for Horticultural Science (ISHS). INT., Aug 1997, Wageningen, Netherlands |
| Popis: | A mechanistic predictive model for diurnal nitrate uptake is proposed. It is based on the simple hypothesis of negative feedback uptake regulation by plant nitrate concentration. Nitrate assimilation is considered as a purely photosynthetic process and diurnal changes in plant water content are taken into account. The model parameters are determined from independent experiments set in a growth room. Long-term measurements of plant growth, nitrogen and nitrate accumulations are completed by short-term measurements of net uptake rate, plant nitrate and water contents during a nycthemeral cycle followed by a prolonged period of darkness. The linear and negative relationship between uptake rate and plant nitrate concentration, as used in the model, provides realistic simulations of experimental data. Furthermore, the role of diurnal plant water content changes in nitrate uptake is emphasized. |
| Databáze: | OpenAIRE |
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