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 commersonii

Common Name(s):



EBN: 1

Ploidy: Diploid



Cytoplasm Type:


This species can survive frosts down to 23 degrees F (-5 C) (Li 1977).

Condition Level of Resistance Source
 Late Blight  Somewhat resistant  Machida-Hirano 2015
 Wart  Somewhat resistant  Machida-Hirano 2015
 Scab  Somewhat resistant  Machida-Hirano 2015
 Soft Rot / Blackleg  Somewhat resistant  Machida-Hirano 2015
 Colorado Potato Beetle  Somewhat resistant  Machida-Hirano 2015
 Root Knot Nematode  Somewhat resistant  Machida-Hirano 2015
 Frost Resistant Machida-Hirano 2015

Glykoalkaloid content


Chen (1976) found that this species reaches its maximum frost resistance (about 11 degrees F, -11.7 C) following a three week period of shortening photoperiod and reducing day and night temperatures.


Crosses with S. tuberosum


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

Crosses with other species

Bamberg (1995) found that at least some accessions of S. commersonii 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.

Watanabe (1991) found that 4.8% of varieties of this species produced 2n pollen and Jackson (1999) found 1-10%, which would be effectively tetraploid and 2EBN.

Female Male Berry Set Seed Set Germination Ploidy Source