Return to Wild Potato Index

Solanum microdontum

Common Name(s) Papa de zorro
Tubers of the wild potato species Solanum microdontum
Solanum microdontum tubers
Code mcd
Synonyms S. gigantophyllum, S. simplicifolium
Clade 4
Series Tuberosa
Ploidy Diploid (2x)
EBN 2
Self-compatible No
Genome
AA
Cytoplasm Type  
Citation
Bitter: Repert. Spec. Nov. Regni Veg. 10: 535. 1912.

Description

Solanum microdontum distribution map
Solanum microdontum distribution map

Solanum microdontum (microdontum means “small teeth”) is primarily a Bolivian species, extending into northern Argentina.  Plants up to three feet tall.  Stolons three feet long or more.  Tubers small, less than an inch, round, light gray purple.  Flowers white to light purple.  Berries round, a bit less than an inch in diameter.

This species can survive frosts down to 27 degrees F (-3 C) (Li 1977).  Vega (1995) found that this species is less frost tolerant than domesticated potato.

Kiszonas (2010) measured the tuber pH of wild potato species and found that S. microdontum has the lowest pH measured at 5.59.  It is not known if tuber pH has any agronomic significance.

Some accessions of this species are resistant to tuber greening.

Condition Level of Resistance Source
Late Blight Somewhat resistant Machida-Hirano 2015
Wart Somewhat resistant Machida-Hirano 2015
Bacterial Wilt Somewhat resistant Machida-Hirano 2015
Soft Rot / Blackleg Somewhat resistant Machida-Hirano 2015
Potato Leaf Roll Virus Somewhat resistant Machida-Hirano 2015
Aphids Somewhat resistant Machida-Hirano 2015
Root Knot Nematode Somewhat resistant Machida-Hirano 2015
Heat Somewhat resistant Machida-Hirano 2015
Drought Somewhat resistant Machida-Hirano 2015
Potato Virus Y Somewhat resistant Chung 2011

Glykoalkaloid content

Images

Solanum microdontum plant
Solanum microdontum plant
Solanum microdontum plant
Solanum microdontum plant
Solanum microdontum flower
Solanum microdontum flower
Solanum microdontum flowers
Solanum microdontum flowers
       
       

Cultivation

I have found seeds of this species easy to germinate using the standard conditions for S. tuberosum.  The hypocotyls of this species are dark red/purple.

Bamberg (1995) found that at least some accessions of S. microdontum flower better at high temperatures than under typical temperate growing conditions.  Flowering was better when greenhouse temperatures exceeded 100 degrees F for several hours during the day.

Bamberg (2017) found a 158% increase in seed set in this species with supplemental applications of liquid fertilizer at four and seven weeks after potting.

Breeding

Crosses with S. tuberosum

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

Crosses with other species

Jackson (1999) found 4-30% 2n pollen in varieties of this species.

Female Male Berry Set Seed Set Germination Ploidy Source
             

References

Solanum microdontum at Solanaceae Source

Solanum microdontum at GRIN Taxonomy

Leave a Reply