CROP WILD RELATIVES OF YAKUTIA: ANALYSIS OF THE DISTRIBUTION OF SPECIES FOR IDENTIFYING FORMS OF VALUE FOR BREEDING PURPOSES
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Abstract
The creation of new highly productive plant cultivars adapted to unfavorable environmental conditions, diseases and pests, and used for the production of high-quality food products, requires a wide range of source material. Crop wild relatives (CWR) represent an important component of the source material for breeding.
Yakutia is characterized by a variety of natural conditions and resources due to its geographical position, which covers significant areas located in the northeast of the Asian part of Russia. Forty percent of the territory is located beyond the Arctic Circle. Significant plant material representing the flora of Yakutia, CWR included, has been accumulated. New data on the flora of Yakutia have been published.
In order to systematize the accumulated information, the available literature data, as well as the information from field surveys (collecting missions in 2020, 2022 & 2023), were used to analyze the CWR flora of Yakutia, which includes 288 species (15% of the total number of species in the flora of the region).
As a result, the greatest richness of CWR species (over 50% of the total number of CWR species in Yakutia) was expectedly found to be concentrated in floristic regions in the south of the republic, i.e. in Central Yakut, Verkhne-Lensky (Upper Lena) and Aldan regions. Among CWR, 26 species are the most widespread and occur in all floristic regions, while 70 species grow only in one floristic region. The widespread species exemplify a high degree of adaptation to contrasting growing conditions in the study area. The species that occur only in one floristic region are either those at the edge of their distribution range, or those outside it, as invasive, where they grow in growth-limiting conditions. All of them are of interest as source material for breeding.
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References
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