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Solanum lobbianum

Description

Solanum lobbianum distribution Map note

Solanum lobbianum (lobbianum, in honor of William Lobb, a British plant collector who first collected the species) is a species of very small distribution in Ecuador and possibly Colombia.  Tubers small and whitish.

Hawkes (1992) discussed the uncertain history of this species.  It was first collected in 1843 and the species was described from that collection by Bitter in 1913.  It was thought to have been collected in Colombia, but it was not found there in subsequent expeditions over the next nearly 150 years.  In 1991, Spooner, Castillo, and Lopez rediscovered the species in Ecuador.  The most likely explanation is that the original collection was made in Ecuador.

Resistance

Condition Type Level of Resistance Source
       

Glykoalkaloid content

Images

       
       
       

Cultivation

I have found seeds of this species difficult to germinate.  They might require conditions different than the standard for S. tuberosum.  The seeds that I started with were old and had a low stated germination percent.

I really blew it with this species, so hopefully you can learn something from my mistakes if you intend to try it.  I started several plants from tissue culture, which grew well and flowered and fruited abundantly.  I normally subculture tissue plantlets and keep them in storage in case they fail outdoors, but I got busy and didn’t get around to it with this species.  That didn’t seem likely to be a problem since the outdoor plants were doing so well.  I collected about a quart of berries and allowed the plants to die in a frost.  When I dug them, I found no tubers.  I then processed the berries and recovered only 22 seeds, none of which looked normal, and none of which germinated.  Unfortunately, it is no longer available from the potato genebank.  I am really annoyed that I didn’t get pictures and didn’t preserve the plants indoors, but it rare that I get neither tubers nor seeds from plants that survive to the end of the season.

Breeding

Crosses with S. tuberosum

 

Female Male Berry Set Seed Set Germination Ploidy Source
             

Crosses with other species

 

Female Male Berry Set Seed Set Germination Ploidy Source
             

References

Solanum lobbianum at Solanaceae Source

Solanum lobbianum at GRIN Taxonomy