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Obtaining valuable genotypes in terms of ornamental purposes and the improvement of the decorative plants genetic fund are an ongoing concern to breeders across all regions of the world. Genotypes with particular features and trait characteristics for breeding which can lend themselves to efϐicient and rapid propagation methods are of great interest. In the experiments conducted in this paper the following objectives were established: examining intraspeciϐic variabilit y in Gloxinia plant, the study of vegetative propagation through leaves cuttings based on the cutting type; the study of the degree of rooting cuttings; the inϐluence of the substrate on rooting cuttings; the analysi s on the interaction between the genotype and the growth factors. Three Gloxinia genotypes were tested (A, B, C) and four rooting substrates: peat, perlite, peat + perlite, peat + perlite + manure (ratio 1:1:1). The research carried out showed that the rooting period of Gloxinia leaves cuttings varied depending on the substrate used between 29 and 38 days. The studies in the genus were differently inϐluenced by t he rooting environment, but also by the cutting type that was made. The best results in terms of rooting expressed by length of the root system were obtained in the B genotype in the substrate made of peat + perlite + manure. It has been noticed a signiϐicant positive interaction between the temperature of the rooting substrate and the length of the roots in the three genotypes studied. Negative correlation has been noticed between the size of the root system and the light intensity depending on the age of cuttings used.

Study on the Interaction between the Genotype and the Exogenous Factors and their Influence on Rooting of Gloxinia Cuttings