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Solanum albicans

Common Name(s)Aya papa, Pishgo papa
Solanum albicans plant
Solanum albicans plant
Codealb
SynonymsS. acaule subsp. albicans, S. acaule subsp. palmirense, S. acaule var. albicans
Clade3+4
SeriesAcaulia
PloidyHexaploid (6x)
EBN4
Tuberization PhotoperiodShort day
Self-compatibleYes
Genome
AAAAAA
Cytoplasm Type 
Citation
Ochoa: Phytologia 54: 392. 1983.

Description

Solanum albicans distribution map
Solanum albicans distribution map

Solanum albicans (albicans meaning white) is hybrid species is related and very similar to Solanum acauleOchoa (2004) believes it to be a cross of S. acaule x S. sogarandinum.  It takes the form of a low-growing rosette, but is a little bit larger than S. acaule.  Stolons run about 10 to 15 inches in length and often act as runners, being very shallow and forming new plants at nodes.  Tubers are mostly round and 1/2 to 1 inch in diameter.  Flowers are mostly white to light blue, occasionally darker.  Fruits are round.

The natural range of S. albicans extends from Ecuador to central Peru at elevations from about 9,840 to 15,600 feet (3000 to 4750 m).

S. albicans, a South American species, is morphologically very similar to S. demissum, a hexaploid North American species.  This is surprising, because the North and South Americans species have been long isolated from each other and have diverged significantly.  Possible explanations include a common ancestor, more extensive prior distribution, or convergent evolution (Spooner 1995).

Resistances

Hijmans (2003) found that at least some accessions of this species were frost resistant down to 23 degrees F (-5 C).  Vega (1995) found that this species is more frost tolerant than domesticated potato, with similar results to S. acaule.

ConditionTypeLevel of ResistanceSource
    

Glykoalkaloid content

I have found no available reference on TGA content in S. albicans.  The levels are probably similar to S. acaule.

Images

Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans plant
Solanum albicans inflorescence
Solanum albicans inflorescence
Solanum albicans flowers
Solanum albicans flowers
Solanum albicans berries
Solanum albicans berries
   

Cultivation

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

Breeding

Crosses with S. tuberosum

Ochoa (2004) reported that the cross of S. albicans x diploid S. tuberosum (as S. phureja) produced self-compatible progeny.

FemaleMaleBerry Set
Seed SetGermPloidySource
S. albicansS. tuberosum 2xHighHigh  Ochoa (2004)
S. albicansS. tuberosum 4xModerateModerate  Jackson (1999)
S. tuberosum 4xS. albicansMinimalMinimal  Jackson (1999)

Crosses with other species

Jackson (1999) found 5-27% 2n pollen for varieties of this species.

FemaleMaleBerry Set
Seed SetGermPloidySource
S. albicansS. acauleHighLow  Ochoa (2004)
S. acauleS. albicansHighLow  Ochoa (2004)
S. albicansS. boliviense (as S. megistacrolobum)ModerateNone  Ochoa (2004) 
S. albicansS. brevicaule (as S. leptophyes)HighNone  Ochoa (2004)
S. albicansS. candolleanum (as S. bukasovii)HighLow  Ochoa (2004)
S. albicansS. chiquidenumLowNone  Ochoa (2004)
S. albicansS. chomatophilumHighLow  Ochoa (2004)
S. albicansS. colombianum (as S. nemorosum)NoneNone  Ochoa (2004)
S. albicansS. immiteHighLow  Ochoa (2004)
S. albicansS. lignicauleLowLow  Ochoa (2004)
S. albicansS. medians (as S. arahuayum)HighNone  Ochoa (2004)
S. albicansS. paucissectumLowNone  Ochoa (2004)
S. albicansS. raphanifoliumModerateLow  Ochoa (2004)
S. albicansS. rhomboideilanceolatum (as S. ancophilum)LowModerate  Ochoa (2004)
S. albicansS. sogarandinumHighLow  Ochoa (2004)
S. albicansS. violcaeimarmoratum (as S. urubambae)HighNone  Ochoa (2004)
S. albicansS. wittmackiiHighLow  Ochoa (2004)
S. boliviense (as S. megistacrolobum)S. albicansHighLow  Ochoa (2004)
S. candolleanum (as S. bukasovii)S. albicansHighModerate  Ochoa (2004)
S. chomatophilumS. albicansHighLow  Ochoa (2004)
S. colombianum (as S. nemorosum)S. albicansNoneNone  Ochoa (2004)
S. raphanifoliumS. albicansHighLow  Ochoa (2004)
S. rhomboideilanceolatum (as S. ancophilum)S. albicansLowNone  Ochoa (2004)

References

Solanum albicans at Solanaceae Source

Solanum albicans at GRIN Taxonomy

Solanum albicans at CIP

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