Assessment of biological and genetic diversity of the Latvian population of strawberry clover (Trifolium fragiferum)
2022
IevinsIeviņš, Ģederts, Gederts | Andersone-Ozola, Una | RungisRuņģis, Dainis, Dainis | JekabsoneJēkabsone, Astra, Astra | Karlsons, Andis
The aim of this study was to characterize biological and genetic diversity of geographically isolated micropopulations of strawberry clover in Latvia, with a special attention to resistance to abiotic and anthropogenic factors, as well as dependence on nitrogen fertilizer and symbiosis of N2-fixing bacteria. Plants from all micropopulations were characterized by relatively high resistance to the tested adverse environmental factors, but there were significant differences between individual micropopulations in terms of biomass accumulation and changes in physiological parameters due to these factors. The analysis of genetic diversity showed a low degree of diversification within individual populations, but micropopulations were genetically differentiated from each other, and a significant difference emerged between “marine” and “river/lake” coastal habitats. The observed genetic and physiological diversity shows that the geographically isolated populations of strawberry clover in Latvia represent different ecotypes and are considered to be a valuable biological resource of crop wild relatives.
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