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Solanum cajamarquense

Common Name(s)    
Code cjm
Clade 3
Series Tuberosa
Ploidy Diploid (2x)
Cytoplasm Type  


Solanum cajamarquense distribution Map note

Solanum cajamarquense (cajamarquense indicating that it comes from the region of Cajamarca, Peru) is an unusual speces, native to mid-elevations of the Andes from about 6500 to 8500 feet.  Plants roughly 16 to 20 inches tall.  Stolons long, exceeding two feet.  Tubers small and moniliform, like beads on a string.  Berries small, less than 1/2 inch, round, striped.

S. cajamarquense appears to have unique late blight resistance genes (Lindqvist-Kreuze 2010).  Vega (1995) found that this species is about as frost tolerant as domesticated potato.

Li (2018) placed this species in Clade 3, a group of Andean diploids, but closely neighboring Clade 1+2, North American 1EBN diploid species.

Condition Level of Resistance Source
Late blight Resistant Perez 2007

Glykoalkaloid content


S. cajamarquense seedling


I have found germination of this species to be very slow, taking between one and three months.

The pesticide carbofuran has been observed to reduce flowering in this species (Centeno-diaz 2007).


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