Criteria of assessing introduced varieties of the genus Heuchera L.
Keywords:Heuchera L., variety, grouping, decorative and economic-and-biological traits, evaluation
Purpose. To identify and describe the basic criteria for studying and assessing decorative and economic-and-biological characters of the genus Heuchera L. varieties in the context of introduction.
Methods. Introduction procedure, analytical approach, morphological analysis and biometric data evaluation.
Results. Aided by the comparative morphological analysis of introduced varieties of the genus Heuchera, significant differences in their characters were revealed, including plant height, height and width of the basal rosette of leaves, generative shoot height. There was a significant variation of such parameters as the number of generative shoots within one plant, the number of flowers on a single generative shoot, flowering abundance. Based on investigation findings, 17 groups of varieties were identified for the dominant color of adaxial surface of the leaf blade and 7 groups – for inflorescence color. According to phenological observations, Heuchera varieties groups were determined and the dates of commencement and duration of plants flowering were registered in the context of introduction. The results of these investigations are the necessary basis for the study and evaluation of this culture assortment, they are important in breeding and landscaping.
Conclusions. Based on the results of investigations of morphological features of introduced species of the genus Heuchera, traits and parameters for varieties grouping were defined as well as decorative and economic-and-biological traits that should be evaluated.
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