Varietal and individual variability of three-year common apricot seedlings at introduction in the suburban zone of Krasnoyarsk

Common apricot has valuable fruit, decorative, soil-improving, and ecological properties. Itis advisable to choose varieties that will grow successfully in the northern regions.

The aim of the research was to compare the growth and formation of photosynthetic surface in three-year-old seedlings of common apricot the varieties Academic, Bai, Korolevsky under the conditions of introduction (suburban zone of Krasnoyarsk); to select fast-growing and environmentally efficient specimens within varieties that are characterized by intensive growth, the largest leaf surface. Sowing of stratified seeds was carried out in May 2022 in the Botanical Garden named after Vs.M. Krutovsky. Biometric indicators: height, trunk diameter, number, size, leaf area; photosynthetic surface of leaves on three-year-old seedlings have been identified. It has been established that seedlings have a high level of variability in all indicators. The height and diameter of the stem in individual seedlings of the Korolevsky variety were exceeded by 33.3-71.4%, the length and width of the leaf by 20.0-26.7%, the leaf area by 25.4-57.5%. Specimens with the highest indicators in terms of the number of leaves, leaf blade area and total photosynthetic surface were selected. A high level of variability is observed in height, trunk diameter, and number of leaves. In terms of the number of leaves, their length and area, there is a predominance of the Korolevsky variety. Fast-growing, environmentally efficient specimens have been selected for further vegetative propagation and use in the creation of fast-growing and environmentally efficient plantings.

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