Subtropical and ornamental horticulture
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ABOUT THE REPRODUCTIVE POTENTIAL IN WOODY PLANTS FROM SPIRAEOIDEAE SUBFAMILY IN THE CONDITIONS OF THE MIDDLE TAIGA SUBZONE IN THE KOMI REPUBLIC

Year:
2021
The authors:
Smirnova A. N.
DOI:
10.31360/2225-3068-2021-77-81-91
Page numbers:
81 - 91
Keywords:
Spiraeoideae, middle taiga subzone, introduction, Botanical garden, arboretum, flowering, fruiting

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The subfamily Spiraeoideae includes many species that are valuable as ornamental woody and shrubby plants. In the arboretum of the Botanical Garden (Institute of Biology of Komi Scientific Centre), observations were made on plants from 51 Spiraeoideae taxa. The features of flowering and fruiting phases, as well as seed and vegetative reproduction indicators were studied in the conditions of the middle taiga subzone. Most of them (plants of 42 taxa) regularly bloom. From the fruit-bearing plants, 15 taxa have an annual abundant fruiting; three of them were recorded to have self-seeding. The germination rate of 11 species ranges from 69 to 87 %. The rootability of cuttings within root formation stimulators in individual species reaches 100 %, one species is intensively propagated by root growth. The peculiarities of the reproductive biology for Spiraeoideae subfamily representatives allow us to draw conclusions about their high reproductive potential in the new climatic conditions and the possibility of wider cultivation in the region.
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ISSN 2225-3068

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