The purpose of this study is analysis of relationship between chlorophyll content and chlorophyll photosynthetic potential of oats and barley cultivars. For this aim we used ground remote sensing and laboratory data. Ground data were obtained at the experimental fields, located in the Krasnoyarsk region. Experiments were carried out in different seasons, under various lighting conditions with the control of plants state. Spectral measurements were done by double - beam spectroradiometer. It is installed on the mobile work platform at heights of 5 to 18 m. The study showed good correlation between chlorophyll photosynthetic potential and chlorophyll content for different oats and barley cultivars. The value of chlorophyll photosynthetic potentials is different for barley and oats cultivars during the growing season.