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 polyadenium

Common Name(s):

Synonyms: none

Series: Polyadenia

EBN: 2

Ploidy: Diploid

Segregation: Disomic

Self-compatible: No

Cytoplasm Type: W (Hosaka 2014)

Description

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.

This species can survive frosts down to 26 degrees F (-3.5 C) (Li 1977).

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
Aphids Somewhat resistant  Machida-Hirano 2015
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

Cultivation

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).

Breeding

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 Germination Ploidy Source
S. tuberosum S. polyadenium Minimal None     Jackson (1999)
S. polyadenium S. tuberosum None None     Jackson (1999)
             

Crosses with other species

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

Female Male Berry Set Seed Set Germination Ploidy Source
             

 

 

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