''Fragaria iturupensis'', the Iturup strawberry, is a species of wild strawberry,

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Iturup , other_names = russian: Итуру́п; ja, 択捉島 , location = Sea of Okhotsk , coordinates = , archipelago = Kuril Islands , total_islands = , major_islands = , area_km2 = 3139 , length_km = 200 , width_km = 27 , coastline = , highest_moun ...

in the

Kuril Islands The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese: or ) are a volcanic archipelago currently administered as part of Sakhalin Oblast in the ...

. It is noted to have relatively large berries for a wild species, similar in appearance to those of ''

Fragaria virginiana ''Fragaria virginiana'', known as Virginia strawberry, wild strawberry, common strawberry, or mountain strawberry, is a North American strawberry that grows across much of the United States and southern Canada. It is one of the two species of wi ...

''.

Polyploidy

All strawberries have a base

haploid Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Sets of chromosomes refer to the number of maternal and paternal chromosome copies, respectively ...

count of 7

chromosomes A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are ...

. ''Fragaria iturupensis'' was initially reported as

octoploid Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains ...

(with 8 sets of chromosomes, 56 in total), but subsequent testingHummer, K.E.; Nathewet, P.; Yanagi, T. (2009). Decaploidy in ''Fragaria iturupensis'' (Rosaceae). ''American Journal of Botany''. 96(3): 713–716. found decaploids (with ten sets of chromosomes, a total of 70). It is unclear whether the earlier report was an error, or whether two forms exist.

References

External links

*Hummer, K.E., Sabitov, A., & Davis, T. 2005. Iturup And Sakhalin Island Strawberries. ''HortScience'' 40(4): 1127
Abstract
iturupensis Kuril Islands {{fruit-stub