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Solanum chomatophilum

Description

Solanum chomatophilum distribution map
Solanum chomatophilum distribution map

S. chomatophilum (chomatophilum probably means something like “bank loving”) is found from southern Ecuador south through most of Peru.  It is one of the most widely distributed and variable wild species in Peru.  Its natural habitat is slopes, thickets, woods, and ravines at 8,200 to 13,500 feet (2500 to 4100 m) (Correll 1962).

Plants 1 to 3 feet tall.  Various forms, some rosette-like, others erect.  Very long stolons, from three to almost five feet, sometimes becoming woody.  Tubers whitish, very small, less than an inch in diameter and moniliform (like beads on a string).  Flowers purple to violet.  Berries long and narrow.

Resistances

Hijmans (2003) found that at least some accessions of this species were frost resistant down to 23 degrees F (-5 C).

Condition Type Level of Resistance Source
Alternaria solani (Early Blight) Fungus Somewhat resistant Jansky 2008
Frost Abiotic Resistant Machida-Hirano (2015)
Globodera pallida (Pale Cyst Nematode) Invertebrate Not resistant Castelli 2003
Globodera rostochiensis (Potato Cyst/Golden Nematode) Invertebrate Resistant Castelli 2003
Leptinotarsa decemlineata (Colorado Potato Beetle) Invertebrate Resistant Pelletier (2007)
Macrosiphum euphorbiae (Potato Aphid) Invertebrate Not resistant to Resistant Pompon 2011
Myzus persicae (Green Peach Aphid) Invertebrate Somewhat resistant Pompon (2010), Machida-Hirano (2015)
Pectobacterium carotovorum (Blackleg/Soft Rot) Bacteria Somewhat resistant Chung 2011
Phytophthora infestans (Late Blight) Fungus Not resistant Gonzales 2002
Potato Virus Y (PVY) Virus Not resistant Cai 2011

Glykoalkaloid content

Images

Solanum chomatophilum plant
Solanum chomatophilum plant
Solanum chomatophilum plant
Solanum chomatophilum plant
Solanum chomatophilum flower
Solanum chomatophilum flower
Flower of the wild potato species Solanum chomatophilum
Solanum chomatophilum flower
Flower of the wild potato species Solanum chomatophilum
Solanum chomatophilum flower
Berries of the wild potato species Solanum chomatophilum
Solanum chomatophilum berries
Berries of the wild potato species Solanum chomatophilum
Solanum chomatophilum berries
Berries of the wild potato species Solanum chomatophilum
Solanum chomatophilum berries
       

Cultivation

Chen (1976) found that this species reaches its maximum frost resistance (about 17 degrees F, -8.3 C) following a three week period of shortening photoperiod and reducing day and night temperatures.

Towill (1983) found that seeds of different accessions of this species stored at 1 to 3 degrees C germinated at 36% after 14 years, 50% after 17 years, and 58% after 20 years.

Breeding

Crosses with S. tuberosum

Watanabe (1991) found that 4.3% of varieties of this species produced 2n pollen, which would be effectively tetraploid and probably 4EBN.

Female Male Berry Set
Seed Set Germ Ploidy Source
S. chomatophilum S. tuberosum 2x
High Low     Ochoa (2004)
S. chomatophilum S. tuberosum 4x None None     Jackson (1999)
S. tuberosum 2x
S. chomatophilum Moderate Low     Ochoa (2004)
S. tuberosum 4x S. chomatophilum Low Minimal     Jackson (1999)

Crosses with other species

Jackson (1999) found 3-11% 2n pollen for varieties of this species.

Female Male Berry Set
Seed Set Germ Ploidy Source
S. acaule S. chomatophilum High High     Ochoa (2004) 
S. albicans S. chomatophilum Moderate Low     Ochoa (2004) 

S. candolleanum

(as S. bukasovii)

S. chomatophilum Moderate Moderate     Ochoa (2004) 
S. cantense S. chomatophilum None None     Ochoa (2004) 
S. chiquidenum S. chomatophilum Moderate Low     Ochoa (2004) 
S. chomatophilum S. acaule High Moderate     Ochoa (2004) 
S. chomatophilum S. albicans High Low     Ochoa (2004) 
S. chomatophilum S. blanco-galdosii Low High     Ochoa (2004) 
S. chomatophilum

S. boliviense

(as S. megistacrolobum)

High Moderate     Ochoa (2004) 
S. chomatophilum

S. candolleanum

(as S. bukasovii)

High Moderate     Ochoa (2004) 
S. chomatophilum S. cantense Low Moderate     Ochoa (2004) 
S. chomatophilum S. chiquidenum Moderate Low     Ochoa (2004) 
S. chomatophilum

S. colombianum

(as S. jaenense)

Low Low     Ochoa (2004) 
S. chomatophilum S. contumazaense Low None     Ochoa (2004) 
S. chomatophilum S. dolichocremastrum Moderate High     Ochoa (2004) 
S. chomatophilum S. huancabambense None None     Ochoa (2004) 
S. chomatophilum S. humectophilum Moderate High     Ochoa (2004) 
S. chomatophilum S. hypacrarthrum Moderate None     Ochoa (2004) 
S. chomatophilum S. immite Moderate High     Ochoa (2004) 
S. chomatophilum S. laxissimum Moderate High     Ochoa (2004) 
S. chomatophilum S. lignicaule Moderate Moderate     Ochoa (2004) 
S. chomatophilum S. limbaniense Low High     Ochoa (2004) 
S. chomatophilum S. mochiquense High High     Ochoa (2004) 
S. chomatophilum S. multiinterruptum High Moderate     Ochoa (2004) 
S. chomatophilum S. paucissectum Low Low     Ochoa (2004) 
S. chomatophilum S. peloquinianum Moderate Moderate     Ochoa (2004) 
S. chomatophilum S. piurae Moderate Moderate     Ochoa (2004) 
S. chomatophilum S. raphanifolium Moderate None     Ochoa (2004) 
S. chomatophilum S. raquialatum Moderate Moderate     Ochoa (2004) 
S. chomatophilum S. rhomboideilanceolatum Moderate Moderate     Ochoa (2004) 
S. chomatophilum S. simplicissimum High None     Ochoa (2004) 
S. chomatophilum S. sogarandinum Moderate Moderate     Ochoa (2004) 
S. chomatophilum S. wittmackii None None     Ochoa (2004) 

S. colombianum

(as S. jaenense)

S. chomatophilum Moderate None     Ochoa (2004)
S. contumazaense S. chomatophilum None None     Ochoa (2004) 
S. dolichocremastrum S. chomatophilum Low None     Ochoa (2004) 
S. huancabambense S. chomatophilum High High     Ochoa (2004) 
S. humectophilum S. chomatophilum Moderate Moderate     Ochoa (2004) 
S. hypacrarthrum S. chomatophilum None None     Ochoa (2004) 
S. immite S. chomatophilum Moderate None     Ochoa (2004) 
S. laxissimum S. chomatophilum Low None     Ochoa (2004) 
S. lignicaule S. chomatophilum Low None     Ochoa (2004) 
S. limbaniense S. chomatophilum Moderate None     Ochoa (2004) 
S. mochiquense S. chomatophilum None None     Ochoa (2004) 
S. multiinterruptum S. chomatophilum High None     Ochoa (2004) 
S. paucissectum S. chomatophilum High Moderate     Ochoa (2004) 
S. peloquinianum S. chomatophilum Moderate Moderate     Ochoa (2004) 
S. piurae S. chomatophilum Moderate Moderate     Ochoa (2004) 
S. raphanifolium S. chomatophilum Low None     Ochoa (2004) 
S. raquialatum S. chomatophilum Moderate Moderate     Ochoa (2004) 
S. rhomboideilanceolatum S. chomatophilum High Moderate     Ochoa (2004) 
S. simplicissimum S. chomatophilum Moderate None     Ochoa (2004) 
S. sogarandinum S. chomatophilum Low None     Ochoa (2004) 
S. wittmackii S. chomatophilum Low None     Ochoa (2004) 

References

Solanum chomatophilum at Solanaceae Source

Solanum chomatophilum at GRIN Taxonomy

Solanum chomatophilum at CIP