As a result of Amygdalus nana plant flowers structure study, when introduced in the middle taiga subzone of the Komi Republic, its conformity to the species features of the plant is shown. The authors also note teratological changes, expressed in the abnormal development of sterile or fertile flower structures. The number of petals increases, their edges become wavy; stamens transform into petals, there is pistil underdevelopment, etc. The life cycle of A. nana flowers was traced in the conditions of the North, the duration of the phases of their development was determined (Phase I - dense green bud, II phase of pink bud, III phase - beginning of blossoming flower, IV phase - full blossoming of the flower and V phase - fading). The features of the fruiting process of A. nana are shown, where degeneration of fertilized ovules is noted, which is due to the possible violation of different stages of embryogenesis. In this case, a significant number of anomalies in the fertile parts of the flower, possibly, lead to a small number of fruits on plants. The analysis of the A. nana flower structure in the middle taiga subzone of the Komi Republic gives additional information on the intraspecific changes in the reproductive structures of this plant; the results obtained can serve as additional information for establishing anthocological differences within the taxon.
The paper studies the content of culture and wild samples of flavonoids Pentaphylloides fruticosa (L.) O. Schwarz in the European North. On the territory of the Komi Republic P. fruticosa requires conservation measures. The species is used as an ornamental, medicinal, food, honey and forage plant. When determining the pool of flavonoids of vegetative parts of one-year shoots in the flowering phase, it was found that they were significantly higher in wild samples than in introduced ones. This suggests that geographical growing conditions should influence the amount of flavonoids. The difference in the amount of flavonoids in the flowers between the wild and introduction of the samples was found. There were no significant differences between the introduced samples in the leafing phase and in the flowering phase. In the phase of mass fruiting the amount of flavonoids was significantly higher in sample № 1, due to their different ecological and geographical origin. It is advisable to introduce the culture of these natural samples that grow in the northernmost location in Europe, which can be a promising source of raw flavonoids and their further study in new growing conditions.
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