Solanum x doddsii
||Correll: Wrightia 2: 186. 1961.|
Solanum x doddsii (doddsii, in honor of potato researcher Kenneth S. Dodds) is a hybrid species native to dry valleys in the Bolivian Andes. Plants reach about two feet tall. Tubers are round, reaching about an inch in diameter. Flowers light purple. Berries small, round, and reported to be light green, although those that I have seen have been almost white. Thought to be a natural hybrid of S. chacoense x S. brevicaule, or perhaps the reverse. Spooner (2018) showed that, in a DNA marker analysis, different accessions of this species grouped closely with either S. berthaultii or S. brevicaule, which may indicate misidentification or that this species is more complex that previously thought. The data appears to suggest that there may be hybrids of both S. chacoense and S. brevicaule and S. berthaultii and S. brevicaule among accessions identified as S. x doddsii.
Unfortunately, Hawkes (1989) notes that the habitat in which this the original collections were made has been destroyed and plants were absent, indicating that it may have been extirpated in the wild.
Vega (1995) found that this species is less frost tolerant than domesticated potato.
|Condition||Type||Level of Resistance||Source|
|Golden nematode (G. rostochiensis)||Invertebrate||Somewhat resistant||Castelli 2003|
|Late Blight||Fungus||Not resistant||Bachmann-Pfabe 2019|
|Potato Cyst Nematode (G. pallida)||Invertebrate||Somewhat resistant||Castelli 2003|
I have found seeds of this species easy to germinate using the standard conditions for S. tuberosum.
In my experience, this species does not fruit easily. Most flowers drop, even when hand pollinated.
Crosses with S. tuberosum
|S. x doddsii||S. tuberosum||None||None||Jackson (1999)|
|S. tuberosum||S. x doddsii||Low||Minimal||Jackson (1999)|
Crosses with other species
Jackson (1999) found 0-11% 2n pollen for varieties of this species.