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Solanum clarum
| Common Names | Bright-leaved nightshade |
| Code | clr |
| Synonyms | |
| Clade | 1 |
| Series | Bulbocastana |
| Ploidy | Diploid (2x) |
| EBN | 1 |
| Tuberization Photoperiod | Short Day |
| Self-compatibility | No |
| Nuclear Genome | B |
| Cytoplasmic Genome | Unknown |
| Citation | Correll: Contrib. Texas Res. Found., Bot. Stud. 1: 10, fig. 4. 1950. |
Description
Solanum clarum is a species primarily of northwest Guatemala, reaching slightly into Mexico. Plants roughly one half to one foot tall. Leaves are simple, unusual for a potato. Tubers smaller than an inch in diameter and white to bluish. Grows in colonies as an understory plant about 10,200 to 12,500 (3100 to 3800 m) (Correll 1962).
The specific epithet, clarum, means “clear” or “bright” but the context isn’t obvious to me. While there is no completely standardized pronunciation for scientific names, the most common way to pronounce this species is probably so-LAY-num CLAY-rum.
Resistances
Vega (1995) found that this species is less frost tolerant than domesticated potato.
| Condition | Type | Level of Resistance | Source |
|---|---|---|---|
| Globodera rostochiensis (Potato Cyst/Golden Nematode) | Invertebrate | Somewhat resistant | Machida-Hirano 2015 |
| Leptinotarsa decemlineata (Colorado Potato Beetle) | Invertebrate | Somewhat resistant | Machida-Hirano 2015 |
| Myzus persicae (Green Peach Aphid) | Invertebrate | Somewhat resistant | Machida-Hirano 2015 |
| Ralstonia solanacearum (Bacterial Wilt) | Bacterium | Somewhat resistant | Machida-Hirano 2015 |
Glykoalkaloid content
No information.
Images
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Cultivation
I have found seeds of this species fairly easy to germinate using the standard conditions for S. tuberosum.
Towill (1983) found that seeds of this species stored at 1 to 3 degrees C germinated at 16% after 12 years.
Breeding
EBN is not reported for this species, but its closest relatives are 1EBN and all but one species with the B genome are 1EBN, so it seems like a safe assumption.
Crosses with S. tuberosum
| Female | Male | Berry Set | Seed Set | Germ | Ploidy | Source |
|---|---|---|---|---|---|---|
Crosses with other species
Watanabe (1991) found no varieties of this species that produced 2n pollen.
| Female | Male | Berry Set | Seed Set | Germ | Ploidy | Source |
|---|---|---|---|---|---|---|
References
Solanum clarum at Solanaceae Source