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Solanum infundibuliforme

Common Name(s)  
Code ifd
Synonyms S. glanduliferum, S. xerophyllum
Clade 4
Series Cuneoalata
Ploidy Diploid (2x)
EBN 2
Self-compatible No
Cytoplasm Type  

Description

Solanum infundibuliforme (infundibuliforme meaning “funnel shaped”) is a high altitude species, growing natively in dry regions with almost year-round frost exposure, similar to S. acaule.  Small plants, about 4 to 10 inches tall.  Fuzzy leaves and stems.  Stolons reach about two feet.  Tubers small, mostly round, mostly less than an inch in diameter, occasionally reaching about two inches in cultivation.  It is native to the three border region of southern Bolivia, northeast Chile, and northwest Argentina.

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

Condition Level of Resistance Source
Wart 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 
Frost Somewhat resistant Machida-Hirano 2015 

Glykoalkaloid content

Little information is available about the glycoalkaloid composition of this species.  Petersen (1993) reported that the primary alkaloid is solanidine, which usually indicates that the glycoalkaloids are solanine and chaconine.

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Cultivation

The USDA potato genebank has observed that some accessions of this species are dependent upon GA3 for germination (Bamberg 1999).

Breeding

A mutation was discovered in S. infundibuliforme, called topiary.  It is a single recessive gene, tp (Leue 1982), located on chromosome 3 (Wagenvoort 1988), that affects growth habit and tuberization.  According to Den Nijs (1980), the mutation removes apical dominance so that the plant becomes short and bushy.  At the same time, it causes early and extended tuber growth and much shorter stolons.  This can have the effect of overcoming short day photoperiod.

Crosses with S. tuberosum

Female Male Berry Set Seed Set Germination Ploidy Source
S. tuberosum S. infundibuliforme None None     Jackson (1999)
S. infundibuliforme S. tuberosum None None     Jackson (1999)

Crosses with other species

Jackson (1999) found 5-13% 2n pollen for varieties of this species.

Female Male Berry Set Seed Set Germination Ploidy Source
S. infundibuliforme S. boliviense High High High   Ochoa (1990)
S. boliviense S. infundibuliforme High High High   Ochoa (1990)
S. infundibuliforme S. brevicaule High High High   Ochoa (1990)
S. brevicaule S. infundibuliforme High High High   Ochoa (1990)
S. infundibuliforme S. berthaultii (as S. tarijense) Yes Yes Yes   Ochoa (1990)
S. infundibuliforme S. anamatophilum Low Low Yes   Ochoa (1990)

 

 

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