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Solanum cajamarquense

Common Name(s)    
Above ground plant of the wild potato species Solanum cajamarquense
Solanum cajamarquense plant
Code cjm
Synonyms S. cajamarcense
Clade 3
Series Tuberosa
Ploidy Diploid (2x)
EBN 1
Tuberization Photoperiod Unknown
Self-compatible Unknown (probably not)
Genome
PP
Cytoplasm Type  
Citation
Ochoa: Agronomía (Lima) 26(4): 314. 1959.

Description

Solanum cajamarquense distribution map
Solanum cajamarquense distribution map

Solanum cajamarquense (cajamarquense indicating that it comes from the region of Cajamarca) is an unusual speces, with a small distribution in northern Peru.  It grows at 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.  Flowers white.  Berries small, less than 1/2 inch, round, striped.

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

Resistances

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.

Some plants of this species produce very heavy trichomes, which presumably acts as an insect deterrent.

Condition Type Level of Resistance Source
Late blight Fungus Resistant Gonzales 2002, Perez 2007

Glykoalkaloid content

Images

Solanum cajamarquense seedling
Solanum cajamarquense seedling
Solanum cajamarquense plant
Solanum cajamarquense plant
Solanum cajamarquense plant
Solanum cajamarquense plant
Solanum cajamarquense plant
Solanum cajamarquense plant
Solanum cajamarquense flower
Solanum cajamarquense flower
Solanum cajamarquense flowers
Solanum cajamarquense flowers
Above ground plant of the wild potato species Solanum cajamarquense
Solanum cajamarquense plant
Heavy trichome development on the wild potato species Solanum cajamarquense
Solanum cajamarquense trichomes
       

Cultivation

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).

Breeding

Crosses with S. tuberosum

Female Male Berry Set
Seed Set Germ Ploidy Source
             

Crosses with other species

Female Male Berry Set
Seed Set Germ Ploidy Source
             

References

Solanum cajamarquense at Solanaceae Source

Solanum cajamarquense at GRIN Taxonomy

Solanum cajamarquense at CIP

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