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Solanum polyadenium

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

Description

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).

Resistances

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 Type Level of Resistance Source
Aphids Invertebrate Resistant Alvarez 2006
Aphids Invertebrate Somewhat resistant  Machida-Hirano 2015
Bacterial Wilt Bacteria Somewhat resistant  Machida-Hirano 2015
Colorado Potato Beetle Invertebrate Somewhat resistant  Machida-Hirano 2015, Pelletier 1999
Drought Abiotic Somewhat resistant Machida-Hirano 2015
Early Blight Fungus Somewhat resistant Jansky 2008
Frost Abiotic Somewhat resistant  Machida-Hirano 2015
Heat Abiotic Somewhat resistant Machida-Hirano 2015
Late Blight Fungus Resistant Gonzales 2002
Late Blight Fungus Somewhat resistant Bachmann-Pfabe 2019
Potato Cyst Nematode Invertebrate Somewhat resistant  Machida-Hirano 2015
Potato Cyst Nematode (G. pallida) Invertebrate Not resistant Bachmann-Pfabe 2019
Potato Leaf Roll Virus Virus Somewhat resistant  Machida-Hirano 2015
Potato Virus Y Virus Not resistant Cai 2011
Root Knot Nematode Invertebrate Somewhat resistant  Machida-Hirano 2015
Soft rot (P. carotovorum) Bacteria Not resistant Chung 2011
Wart Fungus Somewhat resistant  Machida-Hirano 2015

Glykoalkaloid content

Images

Solanum polyadenium plant
Solanum polyadenium plant
     
       
       

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).

Towill (1983) found that seeds of this species stored at 1 to 3 degrees C germinated at 100% after 16 years and 72% after 24 years.

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 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
             

References

Solanum polyadenium at Solanaceae Source

Solanum polyadenium at GRIN Taxonomy

 

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