This page is a draft, part of our ongoing wild potato project. I’ll probably be adding information to the species pages through 2020 at least, but I’m making them public since they may be useful even incomplete.

Solanum ajanhuiri

Common Name(s): Yari



EBN: 2

Ploidy: Diploid

Self-compatible: No

Cytoplasm Type:


S. ajanhuiri is perhaps better included among the cultivated species than the wild, but the dividing line isn’t entirely clear and this species is treated more like a wild species in breeding programs.  This species is cultivated primarily in the Bolivian altiplano, where it is valuable for its early bearing and frost resistance.

The origin of S. ajanhuiri is believed to be as a hybrid between diploid S. tuberosum ssp. andigenum (S. stenotomum) and S. boliviense.  This is a contrast to the other frost resistant highland species, S. juzepczukii and S. curtilobum, which arose from crosses and backcrosses between S. tuberosum and S. acaule.

All varieties are noted to be significantly male sterile, but not completely.  Seed has been obtained from crosses between different varieties of S. ajanhuiri.

S. ajanhuiri appears to have frost resistance that is nearly the equal of S. acaule, down to at least 23 degrees F and perhaps as low as 21.

Condition Level of Resistance Source
 Frost Somewhat resistant Machida-Hirano 2015
 Drought Somewhat resistant Machida-Hirano 2015


I have had good success germinating seeds from S. ajanhuiri using the same conditions as for S. tuberosum.

Crosses with S. tuberosum


Female Male Berry Set Seed Set Germination Ploidy Source

Crosses with other species


Female Male Berry Set Seed Set Germination Ploidy Source

Glykoalkaloid content

Osman (1978) found a level of 7.1mg/kg for a single accession of this species.  It is probably not safe to assume that all varieties have levels this low.