In the master’s thesis, we have studied optical properties and physiological, morphological and b... more In the master’s thesis, we have studied optical properties and physiological, morphological and biochemical characteristics of the bark in four shrub species: common hazel (Corylus avellana), black elder (Sambucus nigra), common privet (Ligustrum vulgare) and dog rose (Rosa canina). In the wavelength range between 280 nm and 885 nm, we measured the reflectivity and transmittance of the crust. We studied the photochemical effectiveness of FS II and determined the amounts of the chlorophylls a and b, carotenoids, anthocyanins and UV-B and UV-A absorbing substances in the bark. We analysed anatomic and morphological characteristics of the bark using a cross-sections of the stem. The thickness of the periderm should exert an impact on optical characteristics of the bark, but light transmittance and reflectance depend on the number of living or dead cells in the phellem (cork). The content of individual pigments depends on light conditions, which differed among species. The light transmi...
In the master’s thesis, we have studied optical properties and physiological, morphological and b... more In the master’s thesis, we have studied optical properties and physiological, morphological and biochemical characteristics of the bark in four shrub species: common hazel (Corylus avellana), black elder (Sambucus nigra), common privet (Ligustrum vulgare) and dog rose (Rosa canina). In the wavelength range between 280 nm and 885 nm, we measured the reflectivity and transmittance of the crust. We studied the photochemical effectiveness of FS II and determined the amounts of the chlorophylls a and b, carotenoids, anthocyanins and UV-B and UV-A absorbing substances in the bark. We analysed anatomic and morphological characteristics of the bark using a cross-sections of the stem. The thickness of the periderm should exert an impact on optical characteristics of the bark, but light transmittance and reflectance depend on the number of living or dead cells in the phellem (cork). The content of individual pigments depends on light conditions, which differed among species. The light transmi...
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Papers by Bojana Ropret