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Solanum stenophyllidium

Common Name(s)   A black and white photo of a tray of Solanum brevicaule tubers. They are about 1 to 2 inches long, oval, and similar in form to baking potatoes.
Code sph
Synonyms S. brachistotrichum, S. jamesii, S. nayaritense
Clade 1
Series Pinnatisecta
Ploidy Diploid (2x)
EBN 1
Self-compatible No
Genome
BB
Cytoplasm Type  

Description

Solanum stenophyllidium (stenophyllidium meaning narrow leaves) is a Mexican species, ranging from central Mexico north almost to the US border.  Highly variable in size and form.  Plants range about 9 to 27 inches tall.  Long, thin leaves, similar to many of the Mexican dryland species.

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

Condition Type Level of Resistance Source
Early Blight Fungus Somewhat resistant Jansky 2008
Frost Abiotic Somewhat resistant Machida-Hirano 2015 (as S. brachistotrichum)
Late Blight Fungus Somewhat resistant Bachmann-Pfabe 2019
Potato Cyst Nematode (G. pallida) Invertebrate Not resistant Bachmann-Pfabe 2019
Potato Virus Y Virus Not resistant Cai 2011
Soft rot (P. carotovorum) Bacteria Not resistant Chung 2011

Glykoalkaloid content

Images

Seedlings of the wild potato species Solanum stenophyllidium
Solanum stenophyllidium seedlings
     
       
       

Cultivation

Bamberg (2017) found a 56% increase in seed set in this species with supplemental applications of liquid fertilizer at four and seven weeks after potting.

Towill (1983) found that seeds of this species stored at 1 to 3 degrees C germinated at 40% after 8 years.

Trapero-Mozos (2018) determined that this species will tolerate a temperature of 40 C even without prior acclimatization to warm temperatures.

Breeding

Crosses with S. tuberosum

Female Male Berry Set
Seed Set Ploidy Germ Source
S. tuberosum S. stenophyllidium (as S. brachistotrichum) None  None     Jackson (1999)
S. stenophyllidium (as S. brachistotrichum) S. tuberosum None None     Jackson (1999)

Crosses with other species

Watanabe (1991) found that 25% (although only 2 plants) of varieties of this species (as S. brachistotrichum) produced 2n pollen and Jackson (1999) found 7-13%, which would be effectively tetraploid and 2EBN.

Female Male Berry Set
Seed Set Ploidy Germ Source
             

References

Solanum stenophyllidium at Solanaceae Source

Solanum stenophyllidium at GRIN Taxonomy

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