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Solanum neorossii
| Common Names | |
| Code | nrs |
| Synonyms | S. hannemanii |
| Clade | 4 |
| Series | Tuberosa |
| Ploidy | Diploid (2x) |
| EBN | 2 |
| Tuberization Photoperiod | Unknown |
| Self-compatibility | No |
| Nuclear Genome | A |
| Cytoplasmic Genome | T |
| Citation | Hawkes & Hjerting: Bot. J. Linn. Soc. 86: 414: 1983. |
Description
Solanum neorossii is a species found in northern Argentina, close to the Bolivian border. It was first described in 1983 from materials collected in 1966 (Hawkes 1983).
The specific epithet, neorossii, honors German potato breeder Hans D. Ross. The prefix neo- is added because the name S. rossii was previously applied to a species that was never accepted. While there is no completely standardized pronunciation for scientific names, the most common way to pronounce this species is probably so-LAY-num nee-oh-ROS-see-eye.
The chloroplast genome of this species occurs in two different haplotypes (Hosaka 2003).
Resistances
In a study of early blight resistance, Jansky (2008) found that S. neorossii was the most resistant species tested.
Vega (1995) found that this species is more frost tolerant than domesticated potato.
This species carries a resistance gene to powdery mildew caused by Golovinomyces orontii or G. cichoracearum (Park 2009).
| Condition | Type | Level of Resistance | Source |
|---|---|---|---|
| Alfalfa Mosaic Virus (AMV) | Virus | Hypersensitive | Horvath 1989 |
| Alternaria solani (Early Blight) | Fungus | Somewhat resistant | Jansky 2008 |
| Erysiphe cichoracearum (Powdery Mildew) | Fungus | Resistant | Park 2009 |
| Globodera pallida (Pale Cyst Nematode) | Invertebrate | Somewhat resistant | Castelli 2003 |
| Globodera pallida (Pale Cyst Nematode) | Invertebrate | Not resistant | Bachmann-Pfabe 2019 |
| Globodera rostochiensis (Potato Cyst/Golden Nematode) | Invertebrate | Resistant | Castelli 2003 |
| Pectobacterium carotovorum (Blackleg/Soft Rot) | Bacteria | Not resistant | Chung 2011 |
| Phytophthora infestans (Late Blight) | Fungus | Resistant | Bachmann-Pfabe 2019 |
| Potato Virus X (PVX) | Virus | Resistant | Horvath 1989 |
Glykoalkaloid content
No information is available and I have not yet tasted this species.
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Cultivation
Breeding
Crosses with S. tuberosum
| Female | Male | Berry Set | Seed Set | Germination | Ploidy | Source |
| S. tuberosum | S. neorossii | Minimal | None | Jackson (1999) | ||
| S. neorossi | S. tuberosum | Minimal | Minimal | Jackson (1999) | ||
Crosses with other species
Jackson (1999) found 6-17% 2n pollen for varieties of this species.
| Female | Male | Berry Set | Seed Set | Germination | Ploidy | Source |