Abstract
The article presents the results of research on the search for universal vegetation indices on spring barley plants grown on a hydroponic system in a closed climate chamber. Using a spectrophotometer, the concentrations of chlorophyll in the leaves of spring barley during the tillering phase ranged in chlorophyll Cl a from 0.17 to 0.35 mg/cm2, chlorophyll Cl b from 0.11 to 0.31 mg/cm2, chlorophyll Cl a+b from 0.11 to 0.25 mg/cm2 and carotenoids (Car) from 0.11 to 0.19 mg/cm2. To quantify the chlorophyll content, several vegetation indices were derived, calculated on the basis of the reflection coefficient at certain wavelengths. By collecting spectral images of spring barley leaves and using Spearman correlation, we found a close correlation between CVI and OSAVI indices with Cl a+b at r2= 0.93 and r2= 0.91. This work has shown that the use of vegetation indices is promising for assessing the content of photosynthetic pigments in the leaves of spring barley. Thus, hyperspectral assessment can be used as a non-destructive and effective method in selection and seed production of this crop.
Published Version
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