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Solanum polyadenium

Common Name(s)  
Solanum polyadenium plant
Solanum polyadenium plant
Code pld
Clade 1
Series Polyadenia
Ploidy Diploid (2x)
Self-compatible Yes
Cytoplasm Type W (Hosaka 2014)


Solanum polyadenium (polyadenium means “many glands,” referring to the glandular hairs of this species) is a widespread, woodland species in central Mexico.  Plants range from about a foot to 4.5 feet tall.  Leaves are densely covered in glandular hairs.  White flowers.  Round fruits.  Tubers narrow and sometimes coiling but can grow more than a foot long, the largest of any wild species according to Correll (1962).

Growing at 6,200 to 9,500 feet (1900 to 2900 m) on limestone and volcanic soils (Correll 1962).


This species can survive frosts down to 26 degrees F (-3.5 C) (Li 1977).  Vega (1995) found that this species is less frost tolerant than domesticated potato.

Pelletier (1999) found that Colorado potato beetles have increased adult and larval mortality and low egg production on this species.

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
Potato Leaf Roll Virus Somewhat resistant  Machida-Hirano 2015
Colorado Potato Beetle Somewhat resistant  Machida-Hirano 2015, Pelletier 1999
Aphids Somewhat resistant  Machida-Hirano 2015
Aphids Resistant Alvarez 2006
Potato Cyst Nematode Somewhat resistant  Machida-Hirano 2015
Root Knot Nematode Somewhat resistant  Machida-Hirano 2015
Frost Somewhat resistant  Machida-Hirano 2015
Heat Somewhat resistant Machida-Hirano 2015
Drought Somewhat resistant Machida-Hirano 2015

Glykoalkaloid content


Solanum polyadenium plant
Solanum polyadenium plant


I have found this species difficult to germinate using the standard conditions for S. tuberosum.  The USDA potato genebank has observed that some accessions of this species are dependent upon GA3 for germination (Bamberg 1999).


Crosses with S. tuberosum

Watanabe (1991) found that 6.2% of varieties of this species produced 2n pollen, which would be effectively tetraploid and 4EBN.

Female Male Berry Set
Seed Set Ploidy Germ Source
S. tuberosum S. polyadenium Minimal None     Jackson (1999)
S. polyadenium S. tuberosum None None     Jackson (1999)
S. pinnatisectum S. polyadenium Yes Yes     Swaminathan (1955)
S. polyadenium S. jamesii
Yes Yes Yes   Graham (1961)

Crosses with other species

Jackson (1999) found 1-2% 2n pollen for varieties of this species.

Female Male Berry Set
Seed Set Ploidy Germ Source


Solanum polyadenium at Solanaceae Source

Solanum polyadenium at GRIN Taxonomy


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