Details
| Original language | English |
|---|---|
| Pages (from-to) | 876-884 |
| Number of pages | 9 |
| Journal | Functional plant biology |
| Volume | 35 |
| Issue number | 10 |
| Publication status | Published - 11 Nov 2008 |
Abstract
Leaf phototropism might have significant effects on the light interception, dry matter production and yield of cucumber (Cucumis sativus L.). The objective of the present study was to model the phototropism of leaves in a greenhouse cucumber canopy. The dynamic structural model of cucumber using a parametric L-system was extended to mimic the leaf movement induced by gradients in the local light environment of each leaf. The red to far-red (R:FR) ratio is known to be a driving force in shade avoidance reactions of plants. In the model, R:FR ratios on the left and right leaf half of each individual leaf lamina were calculated and the change in tropism angle per phyllochron was based on the R:FR gradient across the leaf halves. The tropism angle of a leaf describes the deviation of the present leaf azimuth from the initial leaf orientation, which is predefined by the phyllotaxis of the plant. Even in its simple form, the model simulated photo-morphogenic canopy responses.
Keywords
- Cucumis sativus L., Functional-structural plant model, L-system, Light, Petiole bending, Tropism
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Agronomy and Crop Science
- Agricultural and Biological Sciences(all)
- Plant Science
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In: Functional plant biology, Vol. 35, No. 10, 11.11.2008, p. 876-884.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modelling leaf phototropism in a cucumber canopy
AU - Kahlen, Katrin
AU - Wiechers, Dirk
AU - Stützel, Hartmut
PY - 2008/11/11
Y1 - 2008/11/11
N2 - Leaf phototropism might have significant effects on the light interception, dry matter production and yield of cucumber (Cucumis sativus L.). The objective of the present study was to model the phototropism of leaves in a greenhouse cucumber canopy. The dynamic structural model of cucumber using a parametric L-system was extended to mimic the leaf movement induced by gradients in the local light environment of each leaf. The red to far-red (R:FR) ratio is known to be a driving force in shade avoidance reactions of plants. In the model, R:FR ratios on the left and right leaf half of each individual leaf lamina were calculated and the change in tropism angle per phyllochron was based on the R:FR gradient across the leaf halves. The tropism angle of a leaf describes the deviation of the present leaf azimuth from the initial leaf orientation, which is predefined by the phyllotaxis of the plant. Even in its simple form, the model simulated photo-morphogenic canopy responses.
AB - Leaf phototropism might have significant effects on the light interception, dry matter production and yield of cucumber (Cucumis sativus L.). The objective of the present study was to model the phototropism of leaves in a greenhouse cucumber canopy. The dynamic structural model of cucumber using a parametric L-system was extended to mimic the leaf movement induced by gradients in the local light environment of each leaf. The red to far-red (R:FR) ratio is known to be a driving force in shade avoidance reactions of plants. In the model, R:FR ratios on the left and right leaf half of each individual leaf lamina were calculated and the change in tropism angle per phyllochron was based on the R:FR gradient across the leaf halves. The tropism angle of a leaf describes the deviation of the present leaf azimuth from the initial leaf orientation, which is predefined by the phyllotaxis of the plant. Even in its simple form, the model simulated photo-morphogenic canopy responses.
KW - Cucumis sativus L.
KW - Functional-structural plant model
KW - L-system
KW - Light
KW - Petiole bending
KW - Tropism
UR - http://www.scopus.com/inward/record.url?scp=55949103524&partnerID=8YFLogxK
U2 - 10.1071/FP08034
DO - 10.1071/FP08034
M3 - Article
AN - SCOPUS:55949103524
VL - 35
SP - 876
EP - 884
JO - Functional plant biology
JF - Functional plant biology
SN - 1445-4408
IS - 10
ER -