METHOD OF THE GRAPES FROST RESISTANCE DETERMINING Russian patent published in 2018 - IPC A01G7/00 G01N21/64 

FIELD: agriculture.

SUBSTANCE: invention relates to viticulture and selection. In the method measuring the plant tissues photochemical activity value. At that, the plant frost resistance evaluation is determined from the chlorophyll cortical photosynthesis maximum value. In the plant selected area or taken from it cuttings preliminary removing the plant outer crust and fixing the chlorophyll fluorescence from the naked chlorenchyma tissues. Fluorescence data are processed, identified and compared with the frost-resistant plants chlorenchyma tissues photochemical activity data obtained by analyzing of the known resistant and / or sensitive to the low-temperatures reference varieties growing on the same plantation under the same conditions, or with the previously obtained chlorophyll in the chlorenchyma tissues fluorescence values of the reference varieties, previously recorded in the created database. Most frost-resistant plants are detected by the photochemical activity in chlorenchyma tissues maximum values.

EFFECT: method provides the frost-resistant varieties accelerated selection and the determination of the degree of damage to plants or parts thereof, including under the field conditions.

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