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 acroglossum

Common Name(s) Papa de Amaa, Auqui
Series Piurana
Ploidy Diploid
Self-compatible No
Cytoplasm Type M (cp C)


Solanum acroglossum is a Peruvian diploid species.  Plants are generally a bit smaller than domesticated diploids, with sparser foliage.  Tubers are very unusual, with alternating swellings and restrictions, like beads on a string (the technical term is moniliform).  It is found at elevations from 2500 all the way up to 3700 meters (Ochoa 2004).

This species can survive frosts down to 25 degrees F (-4 C) (Li 1977).

Condition Level of Resistance Source

Glykoalkaloid content


I have found this species easy to germinate using the standard conditions for S. tuberosum.


Crosses with S. tuberosum

Watanabe (1991) found that 3.6% (which was only 1 plant) of varieties of this species produced 2n pollen, which would be effectively tetraploid and 4EBN.

Female Male Berry Set Seed Set Germination Ploidy Source
 S. tuberosum  S. acroglossum None None     Jackson (1999)

Crosses with other species

Jackson (1999) found 1% 2n pollen in varieties of this species.

Female Male Berry Set Seed Set Germination Ploidy Source
 S. acroglossum  S. chomatophilum Moderate Low      Ochoa (2004)
 S. acroglossum  S. chiquidenum  Low Moderate      Ochoa (2004)
 S. acroglossum  S. candolleanum (as S. ambosinum)  Low High      Ochoa (2004)
 S. chiquidenum   S. acroglossum  Moderate None      Ochoa (2004)
 S. candolleanum (as S. ambosinum)   S. acroglossum  None None      Ochoa (2004)



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