Solanum neocardenasii

Description

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Solanum neocardenasii distribution Map note

Solanum neocardenasii (cardenasii for Bolivian botanist Martin Cardenas and neo- because S. cardenasii had been used previously) is a dryland species from eastern Bolivia.  Plants roughly six inches to a foot tall.  Stolons about a foot long.  Tubers small, less than an inch, round to ovoid.  Flowers white.  Berries round, about half an inch in diameter.

S. neocardenasii and its close relative S. stipuloideum appear to be the closest South American relatives to the North American wild potato species (Spooner 2018).

This species has both type A and B glandular trichomes which provide resistance to aphids by entrapment, similar to S. berthaultii (Lapointe 1986).

Subramanian (2017) found that at least some accessions of this species have unusually low dry matter content.

This species has been tentatively classified as critically endangered on the IUCN Red List (Cadima 2014).

Resistances

Condition Type Level of Resistance Source
Alfalfa Mosaic Virus (AMV) Virus Resistant Horvath 1989
Globodera pallida (Pale Cyst Nematode) Invertebrate Resistant Castelli 2003
Globodera rostochiensis (Potato Cyst/Golden Nematode) Invertebrate Resistant Castelli 2003
Leptinotarsa decemlineata (Colorado Potato Beetle) Invertebrate Resistant Dimock 1986
Myzus persicae (Green Peach Aphid) Invertebrate Resistant Lapointe 1986
Phytophthora infestans (Late Blight) Fungus Not resistant Bachmann-Pfabe 2019
Potato Virus Y (PVY) Virus Resistant Horvath 1989

Glykoalkaloid content

No information.

Images

Seedlings of the wild potato species Solanum neocardenasii
Solanum neocardenasii seedlings
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Aerial plant of the wild potato species Solanum neocardenasii
Solanum neocardenasii plant
Flower buds of the wild potato species Solanum neocardenasii
Solanum neocardenasii flower buds
 
 
 

Cultivation

I have found this species very difficult to germinate.  In addition, the seedlings are slow growing and vulnerable to pests.  Overall, this is one of the most challenging species to get started.

Accessions Evaluated

The following accessions were examined to prepare this profile.  I have evaluated 2/2 accessions currently available from the US potato genebank.

PI 498129

After three attempts, I had no success with this accession and gave up.  Just recently, I noticed a single seedling growing in the pot that had been abandoned on an outdoor shelf.

PI 502642

On the first attempt, nothing; for the second attempt, I got low germination.  The seedlings germinated over several months and only in outdoor conditions.  Give this accession plenty of time to germinate.

Breeding

Crosses with S. tuberosum

Female Male Berry Set Seed Set Germination Ploidy Source
S. tuberosum S. neocardenasii Low None     Jackson 1999
S. neocardenasii S. tuberosum None None     Jackson 1999

Crosses with other species

Female Male Berry Set Seed Set Germination Ploidy Source
             
             

References

Solanum neocardenasii at Solanaceae Source

Solanum neocardenasii at GRIN Taxonomy

Solanum neocardenasii at CIP

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