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Solanum bulbocastanum

Common Name(s)  
Solanum bulbocastanum plant
Solanum bulbocastanum plant
Code blb
Synonyms S. symphisicaulis
Clade 1
Series Bulbocastana
Ploidy Diploid (2x), Triploid (3x)
EBN 1
Tuberization Photoperiod Unknown
Self-compatible No (Whalen 1981)
Genome
BB
Cytoplasm Type W (Hosaka 2014)
Citation
Dunal: J. L. M. Poiret, Encycl. suppl. 3:749. 1814

Description

Solanum bulbocastanum distribution map
Solanum bulbocastanum distribution map

Solanum bulbocastanum (bulbocastanum presumably means something like “chestnut tuber”) is a widespread species ranging from northern Mexico south to Guatemala and Honduras, growing under both dryland and woodland conditions.  Plants reach about three feet tall.  Simple leaves.  Flowers white to light yellow.  Round berries.

Resistances

This species can survive frosts down to 27 degrees F (-3 C) (Li 1977).  Vega (1995) found that this species is less frost tolerant than domesticated potato.  It has the greatest resistance to potato virus Y among wild potatoes (Chung 2011).

Condition Type Level of Resistance Source
Aphids Invertebrate Resistant Machida-Hirano 2015
Aphids Invertebrate Not resistant Alvarez 2006
Bacterial Wilt Bacterium Somewhat resistant Machida-Hirano 2015
Columbia root knot nematode Invertebrate Resistant Brown 1989
Drought Abiotic Somewhat resistant Machida-Hirano 2015
Early Blight Fungus Resistant Prasad 1980
Heat Abiotic Somewhat resistant Machida-Hirano 2015
Late Blight Fungus Resistant Machida-Hirano 2015
Potato Cyst Nematode Invertebrate Somewhat resistant Machida-Hirano 2015
Potato Virus Y Virus Somewhat resistant Chung 2011
Root Knot Nematode Invertebrate Somewhat resistant Machida-Hirano 2015
Soft Rot / Blackleg Bacterium Somewhat resistant Machida-Hirano 2015
Wart Fungus Somewhat resistant Machida-Hirano 2015

Glykoalkaloid content

No information.

Images

Solanum bulbocastanum plant
Solanum bulbocastanum plant
Solanum bulbocastanum plant
Solanum bulbocastanum plant
Solanum bulbocastanum flowers
Solanum bulbocastanum flowers
Berries of the wild potato species Solanum bulbocastanum
Solanum bulbocastanum berries
Berries of the wild potato species Solanum bulbocastanum
Solanum bulbocastanum berries
     
       

Cultivation

I have found seeds of this species easy to germinate using the standard conditions for S. tuberosum.

Bamberg (2018) found that alternating temperatures decreased germination in this species.

Breeding

Crosses with S. tuberosum

Female Male Berry Set
Seed Set Germ Ploidy Source
S. bulbocastanum S. tuberosum 4x None None     Jackson (1999)
S. tuberosum 4x S.bulbocastanum None None     Jackson (1999)
             

Crosses with other species

Watanabe (1991) found that 5.9% of varieties of this species produced 2n pollen and Jackson (1999) found 2-4%, which would be effectively tetraploid and 2EBN.  S. bulbocastanum x S. cardiophyllum hybrids produced 2n pollen in 9.1% of plants.

Female Male Berry Set
Seed Set Germ Ploidy Source
             

References

Solanum bulbocastanum at Solanaceae Source

Solanum bulbocastanum at GRIN Taxonomy

Solanum bulbocastanum at CIP

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