Флуоресцентные-спектральные исследования функционального состояния растений в связи с их устойчивостью к засухе и высокой температуре

The authors present the results of the plants functional state estimation in relation to their resistance to a complex of abiotic factors. A new methodological approach for estimating plant drought- and heat- resistance has been proposed on the basis of the comparative analysis of the water and physical parameters of leaves by applying the methods of the chlorophyll fluorescence photo- and thermoinduction. The determination of the plants  functional state using the proposed methods may be applied in the breeding work and in agriculture on the whole, in particular, in horticulture and irrigated agriculture when normalizing irrigation.