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Solanum laxissimum
| Common Names | Papa de monte |
| Code | lxs |
| Synonyms | S. claviforme, S. neovargasii, S. parvicorollatum, S. rockefelleri, S. santolallae |
| Clade | 4 |
| Series | Conicibaccata |
| Ploidy | Diploid (2x) |
| EBN | 2 |
| Tuberization Photoperiod | Short Day |
| Self-compatibility | No |
| Nuclear Genome | A |
| Cytoplasmic Genome | Unknown |
| Citation | Bitter: Bot. Jahrb. Syst. 54, Beibl. 119: 7. 1916. |
Description
Solanum laxissimum is a Peruvian species growing in eastern Andean forests. Plants three to twelve feet tall and perhaps as much as 16 feet according to Correll (1962). Tubers five to six inches long. Flowers large and light to dark purple. Berries conical, more than an inch long. Tubers whitish to yellow-brown, sometimes with purple eyes. Forest edges at 6,900 to 10,200 feet (2100 to 3100 m) elevation.
The specific epithet, laxissimum, means “loosest,” possibly referring to the leaflet structure of the plant. It is formed from the Latin word “laxus,” for “loose.” While there is no completely standardized pronunciation for scientific names, the most common way to pronounce this species is probably so-LAY-num lahk-SIS-ih-mum.
Ochoa (2004) mentions that the berries are called shaullinco, but doesn’t discuss why they have a name. If they are named, presumably they have some use.
The foliage has a strong and pleasant odor, unlike any other wild potato that I have smelled. I cannot really describe the odor, but perhaps something like a combination of tomato foliage and sage. Other haves suggested parsley and marijuana.
Resistances
| Condition | Type | Level of Resistance | Source |
|---|---|---|---|
| Phytophthora infestans (Late Blight) | Fungus | Some resistance | De Galarreta 1998 |
| Potato Virus M (PVM) | Virus | No resistance | De Galarreta 1998 |
| Potato Virus S (PVS) | Virus | Resistant | De Galarreta 1998 |
Glykoalkaloid content
No information.
Images
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Cultivation
I have found seeds of this species easy to germinate using the standard conditions for S. tuberosum.
Breeding
Jackson (1999) found 5% 2n pollen for varieties of this species.
Crosses with S. tuberosum
Watanabe (1991) found no varieties of this species that produced 2n pollen.
| Female | Male | Berry Set | Seed Set | Germ | Ploidy | Source |
|---|---|---|---|---|---|---|
| S. laxissimum | S. tuberosum | None | None | Jackson (1999) | ||
| S. tuberosum | S. laxissimum | None | None | Jackson (1999) |
Crosses with other species
| Female | Male | Berry Set | Seed Set | Germ | Ploidy | Source |
|---|
References
Solanum laxissimum at Solanaceae Source