Main criteria and parameters in selecting strawberry varieties suitable for integrated fruits production

Abstract

The researches were held in 2011-2019 on the base of strawberry experimental sites in the Experimental Production Association of the I. V. Michurin Federal Scientific Center (Michurinsk, Tambov Region, RF). The purpose of the research was to identify criteria and parameters for evaluating strawberry varieties suitable for integrated cultivation technology, and to improve the commercial assortment. Plants of 45 introduced varieties were studied in strawberry plantations established in 2010-2016. The results of the analysis of the Register of strawberry varieties allowed for use on the territory of the Russian Federation and the region are presented. The principal problems of improving the assortment of strawberry are shown taking into account different cultivation systems. On the base of system analysis of experiment results main criteria and parameters were indicated. They allow us to evaluate the strawberry varieties suitable for the system of integrated production. The folloving sequence for evaluating strawberry varieties is recommended: adaptive capacity (abiotic, biotic and edaphic factors), commercial quality, transportability, productivity, consumption qualities marketability at post-harvest period, season of ripening; simultaneous ripening and number of harvesting. Introduced strawberry varieties have been identified that meet the parameters of the developed assessment, which formed the basis of an commercial assortment suitable for the integrated fruit production system. These are varieties with ripening dates: very early ('Flair', 'НФ311), early ('Elianneу', 'Maya', 'НФ 421', 'Fleurette'), medium ('Isaritsa', 'НФ 205', 'Marmolada', 'Vima Xima'), late ('Florence', 'Malwina'), very late ('Flamenko', 'Monterey', 'San Andreas'). They make it possible to significantly expand the period of strawberry production with high marketability, which is expressed in an increase in the share of the output of products of the highest and first commercial varieties during the life of the plantations (65-90 %).