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The paper presents the results of assessing the quantitative traits of generative shoots of two white-flowered carnation species from four geographically isolated points:  Dianthus awaricus  (Oboda, Khvarada) and  Dianthus fragrans  (Khindakh, Charoda). Comparative analysis showed that, in general, the average values of most morphological characters are higher in  D. fragrans , and the width of the petal and the number of lobe denticles are higher in  D. awaricus . According to the results of two-way analysis of variance, the greatest contribution to the differentiation of species according to the relative components of variance (h2) is made by the traits “number of serrature on a petal” (73.2%), “cup length” (64.7%) and “petal index” (45.8%); unreliable traits (0.0–1.2%) – “flower length”, “flower diameter”, “flower mass” and “internode index”. Growing conditions significantly affect the characteristics of the apical flower: length (53.6%), diameter (40.1%) and its mass (46.3%). Squares of Mahalanobis distances showed the similarity of  D. fragrans  cenopopulations and significant isolation in  D. awaricus , which is possibly associated with significant differences in the complex of ecological-cenotic conditions and possible microevolutionary processes occurring in highly isolated populations. Between the two species, there is a clear separation in space of the two roots of canonical analysis and complete self-identification according to the classification matrix. Such studies contribute to the identification of similarities and differences between closely related species in contrasting environmental conditions.

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Analysis of the variability of the quantitative traits of the generative shoot of two white-flowered carnation species (<i>Dianthus awaricus, Dianthus fragrans</i>) under the conditions of Dagestan

Analysis of the variability of the quantitative traits of the generative shoot of two white-flowered carnation species (Dianthus awaricus, Dianthus fragrans) under the conditions of Dagestan