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Interception of Light and Light Penetration in Plant Tissues
1996There are three potential fates for a photon arriving at a tissue: it can be reflected, absorbed, or transmitted. All three factors are inter-related. The probability of one of these fates depends on the wavelength and the angle of incidence of the radiation, and on several characteristics of the tissue.
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Petiole mechanics, light interception by Lamina, and “Economy in Design”
Oecologia, 1992Computer simulations were used to assess the influence of palmate leaf morphology, decussate phyllotaxy, and the elastic moduli of petioles on the capacity of turgid and wilted twigs ofAesculus hippocastanum to intercept direct solar radiation. Leaf size, morphology, orientation, and the Young's and shear moduli (E and G) of petioles were measured and ...
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Three dimensional model of the interception of light by a canopy
Agricultural and Forest Meteorology, 1998Abstract We present a computer model that simulates, in three dimensions, the interception of light by a canopy. The model divides the canopy into cubic cells, each one characterized by mean leaf angle and the leaf area index. The model calculates the probability that a beam will penetrate to any given cell without being intercepted by the foliage in
Francisco de Castro, Ned Fetcher
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Light interception by grain legume row crops
Plant, Cell & Environment, 1984Abstract. Four contrasting grain legume species (Glycine max, Vigna radiata. Vigna mungo and Vigna angularis) were grown as row crops with both 0.5 m and 1.0 m spacings between row centres. Light transmission profiles, at ground level, across rows of plants, were obtained for each crop on a number of occasions during growth.
D. A. CHARLES-EDWARDS, R. J. LAWN
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Light interception by a row crop of glasshouse peppers
Journal of Horticultural Science, 1993Commercial crops of glasshouse cucumbers, peppers and tomatoes are normally trained into a highly artificial canopy of parallel hedgerows for easy access combined with effective interception of incident light. This study of a sweet pepper canopy with the plants in north-south rows shows that: (a) interception of light increased from a low value at ...
D. W. Hand +2 more
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Beam light interception by twisted leaf surfaces
Agricultural Meteorology, 1976Abstract Formulae allowing the calculation of the shadow projected by a twisted leaf surface (helicoid) on a plane perpendicular to the sun's rays have been presented. The effect of leaf twisting on beam light interception in plant canopies is discussed. The effect of leaf twisting is similar to the effect of an increased erectness of the canopy.
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Diurnal Light Interception and a Computer Model of Light Interception by Hedgerow Apple Orchards
The Journal of Applied Ecology, 1977openaire +1 more source
Canopy structure and light interception
1993P. S. Nobel, I. N. Forseth, S. P. Long
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