Morphogenetic polymorphism of Trifolium repens L. in the pattern of white marking on a leaf on the territory of the city of Sumy with a different anthropogenic load

Abstract

Aim. The peculiarities of morphogenetic polymorphism of Trifolium repens L. in the pattern of white marking on a leaf on the territory of the city Sumy with a different anthropogenic load. Methods. Collection of leafs was carried out in 2018 during the period of mass flowering of plants from the test sites covered with T. repens L. up to 60%, located in geographically distant territories of various neighborhoods of the city. Identification of drawings of white marking on a leaf was carried out according to the method of I.T. Paponova and P.Ya. Schwartzman, using the tables of J.L. Briubecker. Results. In the total sample of T. repens L. collected from territories of the city with a different anthropogenic load, 16 phenotypes and 14 genotypes, formed by a series of 7 alleles of gen V, were revealed. In specimens most often there are wild phenotypes. Among the mutant phenotypes dominate heterozygotes and are detected in the phenotype as double stains. The greatest variety of phenotypes is established on the territories of urban parks, the smallest – on the roadside and lawns of the highway. Conclusions. The phenotypic variability of T. repens L. on the territory of the city with a different anthropogenic stress indicates polymorphism of life strategies that allows maintaining a high adaptive potential in the local populations of the species.
 Keywords: phenotypic and genotypic polymorphism, Тrifolium repens L., white marking on a leaf, anthropogenic load.