Abstract
The outgrowth of tiller buds in Poaceae is influenced by the ratio of red to far-red light irradiance (R:FR). At each point in the plant canopy, R:FR is affected by light scattered by surrounding plant tissues. This paper presents a three-dimensional virtual plant modelling approach to simulate local effects of R:FR on tillering in spring wheat (Triticum aestivum).
¿ R:FR dependence of bud outgrowth was implemented in a wheat model, using three hypothetical responses of bud extension to R:FR (unit step, curvilinear and linear response). Bud break occurred when a threshold bud length was reached. Simulations were performed for three plant population densities.
¿ In accordance with experimental observations, fewer tillers per plant were simulated for higher plant population densities. The linear and curvilinear responses caused a delay in the increase in tiller number compared with experimental data. The unit step response approached experimental results best. It is suggested that a model based on relatively simple relations can be used to simulate degree of tillering.
¿ This study has shown that the virtual plant approach is a promising tool with which to address crop morphological and ecological research questions where the determining factors act at the level of the individual plant organ.
Original language | English |
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Pages (from-to) | 325-336 |
Journal | New Phytologist |
Volume | 176 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2007 |
Keywords
- structural tree models
- natural-environment
- l-systems
- cellular interactions
- mathematical models
- architectural model
- nested radiosity
- light quality
- wide-range
- growth
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Wheat 2004 outdoor
Evers, J. B. (Creator), Vos, J. (Creator), Andrieu, B. (Creator) & Struik, P. C. (Creator), Wageningen UR, 12 Nov 2013
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