Browsing by Author "Marozau, Aleh"
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Item European silver fir – an alternative for the dying Norway spruce in Białowiez·a Forest?(Sciendo (De Gruyter), 2021-06-08) Marozau, Aleh; Mielcarek, Miłosz; Krok, Grzegorz; Paluch, Rafał; Chiliński, KrzysztofThe condition of Norway spruce (Picea abies (L.) Karst) in the Białowieża Forest is categorized as a crisis. It is believed that due to the cooling in the Holocene, the then-relict species of the forest, silver fir (Abies alba Mill.), disappeared from its ecosystems and then spruce appeared. Today’s climate change presents challenges to our civilization, including to forestry. However, there is no information at all about how this affected the silver fir in the Białowieża Forest. In the Polish part of the forest (subcompartment 498 Сi, Białowieża Forest District), for the first time a comprehensive study has been carried out on the condition of mature fir trees planted by man and on their progeny. The results indicate high forestry-taxation indicators of trees, resistance to the abiotic factor and competitiveness. Their constitution corresponds to local environmental conditions. However, the disproportionately small number of adult natural regeneration of old firs indicated some kind of malfunction in the mechanism of natural generational change.Item Hybridity of a plant created in a combination of crossing of (Vaccinium uliginosum L. × V. vitis-idaea L.) × Oxycoccus macrocarpus (Aiton) Pursh at the tetraploid level(Sciendo (De Gruyter), 2019-01-25) Marozau, Aleh; Baranov, Oleg Yu.The aim of the study was to determine the hybridity of the F1 generation of Vaccinium cf. uliginosum × V. vitis-idaea × Oxycoccus macrocarpus created through the consecutive crossing of some common berry species of the family Ericaceae (bog whortleberry, cowberry and marsh cranberry) at the tetraploid level. Certain aspects of phenology and morphometric parameters of vegetative organs of the supposed hybrid and parent plants were analysed using traditional methods of comparative analysis. Molecular genetic assay, including random amplification of polymorphic DNA, simple sequence repeat and sequencing, were also used. Comparison of the phenological and morphometric features of the experimental plant and its parents allows suggesting that in the combination of crossing of (V. uliginosum × V. vitis-idaea) × O. macrocarpus (the cultivar Searles), a three-species hybrid was created. The allelic variants, specific for V. uliginosum, V. vitis-idaea and O. macrocarpus, were detected in the V. cf. uliginosum × V. vitis-idaea × O. macrocarpus genotype. A next-generation sequencing approach is suggested for estimating the share of the genomes of Vaccinium spp. in the formation of the interspecies hybrid.