Abstract
The article presents the results of a study of annual shoots of large-fruited apple varieties, characterized by early ripening and consumer maturity, in the Botanical Garden named after Vs. M. Krutovsky. The leaf area, weight of 1 cm2 of leaf and 1 running centimeter of shoot in absolutely dry state are calculated. A significant positive correlation was revealed between the indicators of the area of the sheet and the mass of 1 cm2 of sheet in absolutely dry state, and between the mass of 1 linear cm shoot and 1 cm2 leaf. Using the regression method, it is possible to reduce labor costs for determining phytomass without resorting to additional measurements of the supply of dry foliage mass and to determine the increase in the mass of branches even in leafless periods. In Siberia, it is recommended to use the most promising varieties of apple trees in terms of photosynthetic activity and productivity for cultivation.
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