Is it possible to simulate rapeseed organ mass in relation to N nutrition? Calibration of the functional-structural model GREENLAB for the oilseed rape Brassica napus L. during the vegetative phase for two nitrogen nutrition levels
The dynamics of leaf and pod apparition and loss play a key role in rapeseed plant growth, as it controls the biomass production and repartition among organs. The source/sink ratio in turn influences appearance and disappearance of organs. Our objective is to investigate this interaction and its consequences on seed growth and development in order to better understand yield variability and seed quality (oil and protein content). In order to quantify the dynamics of C offer and demand, the functional-structural model GREENLAB is being used. It models the interactions between morphogenesis and growth. Biological processes are described according to needs. The mathematical form of GREENLAB allows estimating the ecophysiological parameters of the model (photosynthesis parameters, sink strengths, sink functions) from experimental data by using optimization procedures. The model is being calibrated for rapeseed plant and will be used to investigate the interactions between morphogenesis and biomass production by simulating plant development and growth in response to nitrogen (N) nutrition. In this study we present the calibration procedure for the vegetative phase over autumn and winter for two nitrogen nutrition levels.
Oilseed rape Brassica napus architectural model fitting environmental control
A.Jullien J.-M.Allirand P.-H.Cournède A.Matthieu P.de Reffye B.Ney
Unité Environnement etd Grandes Cultures INRA/INA PG, 78850 Thiverval-Grignon, France Laboratoire MAS, Ecole Centrale Paris, 92295 Ch(a)tenay Malabry, France Equipe Digiplante, INRIA Rocquencourt, B.P.105 78153 Le Chesnay Cedex France
国际会议
第十二届国际油菜大会( The 12th International Rapeseed Congress)
武汉
英文
1241-1244
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）