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Solanum microdontum

Common Name(s) Papa de zorro
Code mcd
Synonyms S. gigantophyllum, S. simplicifolium
Clade 4
Series Tuberosa
Ploidy Diploid (2x)
EBN 2
Self-compatible No
Cytoplasm Type  

Description

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.

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

       
       
       

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
             

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