ANALYSIS OF THE CURRENT RANGE OF PYRUS REGELII REHDER IN KAZAKHSTAN AND CENTRAL ASIA

Ситпаева Г.Т., Абдухадыр А., Зверев Н.Е.

doi:10.37238/2960-1371.2960-138X.2025.98(2).93

Ситпаева Г.Т., Абдухадыр А., Зверев Н.Е. РГП на ПХВ «Институт ботаники и фитоинтродукции» КЛХЖМ МЭПР РК

DOI: https://doi.org/10.37238/2960-1371.2960-138X.2025.98(2).93

Keywords: Pyrus regelii, herbarium, distribution map, ecology, flora, range, population, growing area, geographical points.

Abstract

Herbarium holdings of botanical organizations dated 1880-2022 were analyzed in order to identify the current range of P. regelii species and map its distribution. Materials of herbarium fund of RSE “Institute of Botany and Phytointroduction” (AA) - 133 herbarium sheets, V.L. Komarov Botanical Institute of RAS (LE) - 153 herbarium sheets, Republic of Uzbekistan (TASH) - 90 herbarium sheets were processed and analyzed, points of distribution on sites Plantarium and GBIF were viewed. As a result of the analysis 56 points of P. regelii distribution in Karatau, Western Tien Shan and Kyrgyz Alatau were identified and mapped, 28 points were marked from the territory of Kyrgyzstan, 42 points from Uzbekistan and 8 points from the territory of Tajikistan. It was revealed that the form of P. regelii f. simplicifolia occurs much less frequently than the form of P. regelii f. Koopmani. Possible processes of intrageneric hybridization between Central Asian pears require further ecological-biological and molecular-genetic studies. A critical review of the ecological conditions of P. regelii revealed that the species is distributed along southern, eastern, southwestern, less often northern slopes of mountains at an angle of 34° in the belt of shrub vegetation, in Uzbekistan in the band of juniper. The soil of P. regelii is stony-fine-grained and rubbly, and populations are distributed on mountain slopes along rivers at altitudes from 613 to 2600 m above sea level, depending on the ecological conditions of the gorges.