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Solanum andreanum

Common Name(s) Papa de vieja
Solanum andreanum plant
Solanum andreanum plant
Code adr
Synonyms S. baezense, S. burtonii, S. correllii, S. cyanophyllum, S. paucijugum, S. pichinchense, S. regularifolium, S. serratoris, S. solisii, S. suffrutescens, S. tuquerrense
Clade 3
Series Tuberosa
Ploidy Diploid (2x), tetraploid (4x)
EBN 2
Tuberization Photoperiod Short day
Self-compatible No
Genome
PP
Cytoplasm Type  
Citation
Baker: J. Linn. Soc., Bot. 20:498. 1884

Description

Solanum andreanum distribution map
Solanum andreanum distribution map

Solanum andreanum (andreanum in honor of French botanist E.F. Andre) is a species found in Ecuador and Colombia, growing at elevations between about 11,500 and 13,000 feet.  Plants a little more than a foot tall.  Flowers large, purple.  Tuber small, whitish, sometimes with purple eyes.

Resistances

Bethke (2017) scored wild potato species as a composite of seven resistance studies and S. andreanum (as S. paucijugum) ranked in second place.

Vega (1995) found that this species is less frost tolerant than domesticated potato.

Chung (2011) found extreme variance in resistance in bacterial soft rot in this species.  For accession PI 561650, which they identified as S. paucijugum, but was since reidentified as S. andreanum, they found the lowest level of lesion formation in the study.  On the other hand, they found the highest level of lesion formation in the study for PI 320345.

Condition Type Level of Resistance Source
Early Blight Fungus Somewhat resistant Jansky 2008
Golden nematode (G. rostochiensis) Invertebrate Not resistant Castelli 2003 (as S. paucijugum)
Late Blight Fungus Resistant Gonzales 2002 (as S. paucijugum)
Potato Cyst Nematode (G. pallida) Invertebrate Somewhat resistant Castelli 2003 (as S. paucijugum)
Potato Virus Y Virus Not resistant Cai 2011
Soft rot (P. carotovorum) Bacteria Resistant Chung 2011 (as S. paucijugum)

Glykoalkaloid content

No information.

Images

Solanum andreanum plant
Solanum andreanum plant
Solanum andreanum plant
Solanum andreanum plant
Solanum andreanum plant
Solanum andreanum plant
Flower of the wild potato species Solanum andreanum
Solanum andreanum flower
       
       

Cultivation

I have found this species slow to germinate using the standard conditions for S. tuberosum.  The USDA potato genebank has observed that germination of some accessions of this species is inhibited by GA3 (Bamberg 1999).

Towill (1983) found that seeds of this species stored at 1 to 3 degrees C germinated at 12% after 12 years.

Breeding

Crosses with S. tuberosum

Watanabe (1991) found that 13.9% of varieties of this species produced 2n pollen (calculated from the results for S. andreanum and S. tuquerrense, which has since been reclassified as S. andreanum), which would be effectively tetraploid and 4EBN.

Female Male Berry Set
Seed Set Germ Ploidy Source
S. andreanum (including S. paucijugum, S. solisii, and S. tuquerrense) S. tuberosum None None     Jackson (1999)
S. tuberosum 4x S. andreanum (including S. paucijugum, S. solisii, and S. tuquerrense) None None     Jackson (1999)
             

Crosses with other species

Jackson (1999) found 9-12% 2n pollen for varieties of this species.

Female Male Berry Set
Seed Set Germ Ploidy Source
             

References

Solanum andreanum at Solanaceae Source

Solanum andreanum at GRIN Taxonomy

Solanum andreanum at CIP

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