Solanum x rechei

Common Names | |
Code | rch |
Synonyms | |
Clade | 4 |
Series | Tuberosa |
Ploidy | Diploid (2x), Triploid (3x) |
EBN | 2 |
Tuberization Photoperiod | Unknown |
Self-compatibility | Unknown |
Nuclear Genome | A |
Cytoplasmic Genome | Unknown |
Citation | Hawkes & Hjerting: Pl. Breed. Rec. 146, 171. 1963. |
Description
Solanum x rechei (rechei in honor of Argentinian botanist J.O. Reche) is a nothospecies (natural inter-species hybrid) from Argentina. The parent species were most likely S. microdontum and S. kurtzianum (Clausen 1998). It is a weedy species, common in a small area of Argentina where its parent species overlap in distribution. S. x rechei is notable for being a South American species that will tuberize under long days, a relatively rare trait among the South American wild potatoes.
Most populations of S. x rechei are diploid, but triploid populations also exist (Clausen 1998).
Jarvis (2008) predicts that this species will become extinct in the wild by 2055 due to climate change.
Resistances
Condition | Type | Level of Resistance | Source |
---|---|---|---|
Phytophthora infestans (Late Blight) | Fungus | Not resistant | Bachmann-Pfabe 2019 |
Globodera pallida (Pale Cyst Nematode) | Invertebrate | Not resistant | Bachmann-Pfabe 2019 |
Glykoalkaloid content
Tubers that I have sampled had a strong bitter aftertaste, probably indicating that this species is not safe to eat.
Images
Cultivation
Clausen (1998) observed a low rate of pollen staining in this species, indicating reduced male fertility. I have found that berry production is poor even with hand pollination.
Breeding
Crosses with S. tuberosum
Female | Male | Berry Set | Seed Set | Ploidy | Germ | Source |
---|---|---|---|---|---|---|
S. tuberosum | S. rechei | Low | Minimal | Jackson (1999) | ||
S. rechei | S. tuberosum | None | None | Jackson (1999) | ||
Crosses with other species
Jackson (1999) found 8-11% 2n pollen for varieties of this species.
Female | Male | Berry Set | Seed Set | Ploidy | Germ | Source |
---|---|---|---|---|---|---|