Diagnostics and Description of a New Subspecies of Calluna vulgaris (L.) Hull from Western Siberia
2023
Olga Cherepanova | Irina Petrova | Stanislav Sannikov | Yulia Mishchihina
The article presents the results of the study of fifty populations of common heather (Calluna vulgaris (L.) Hull) collected throughout its range. A phased comparative analysis (genetic, biochemical, anatomical, morphological, and ecological) was carried out with the estimation of indicators that included two key populations&mdash:Zavodouspenskoe (Pritobolye, Western Siberia) and Luga (Baltic, Eastern Europe). It was concluded that heather growing in Western Siberia should be identified as a separate taxonomic group, giving it the status of a subspecies. The gene pool of Pritobolye populations (including Zavodouspenskoe) is represented by the completely dominant (100%) monohaplotype S, which is not found anywhere else. The heather plant growing in Zavodouspenskoe has a longer lifespan. It is distinguished by larger linear leaf dimensions (length 2.06 ±: 0.09 mm), thicker cuticle (4.77 ±: 0.33 &mu:m), increased number of trichomes (18.98 ±: 0.56), and a reduced number of stomata (13.60 ±: 0.63) than that growing in Luga. The new subspecies differs in biochemical composition: twice less content of epicatechin (average 1.992 ±: 0.005 mg g&minus:1), three times more myricetin (average 2.975 ±: 0.005 mg g&minus:1), twice as much chlorogenic acid (average 2.763 ±: 0.004 mg g&minus:1). An ecological feature is that C. vulgaris does not grow in the swamps of Western Siberia and has a small population. This species has a high horticultural potential and requires protection as its population in Western Siberia continues to decline rapidly.
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