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Solanum raphanifolium

Common Name(s)  
Code rap
Synonyms S. hawkesii
Clade 4
Series Megistacroloba
Ploidy Diploid (2x)
EBN 2
Self-compatible No
Cytoplasm Type M (Hosaka 2009, as C)

Description

This species can survive frosts down to 26 degrees F (-3.5 C) (Li 1977).  Vega (1995) found that this species is more frost tolerant than domesticated potato.

Condition Level of Resistance Source
 Wart  Somewhat resistant  Machida-Hirano 2015
 Potato Leaf Roll Virus  Somewhat resistant  Machida-Hirano 2015
 Root Knot Nematode  Somewhat resistant  Machida-Hirano 2015
 Frost  Somewhat resistant  Machida-Hirano 2015
 Heat  Somewhat resistant  Machida-Hirano 2015
 Drought  Somewhat resistant  Machida-Hirano 2015
     

Glykoalkaloid content

Johns (1986b,1990) found glycoalkaloid levels ranging from 28 to 70mg/100g for five accessions of S. raphanifolium.  The primary glycoalkaloids were solanine and chaconine. 

Images

       
       

Cultivation

I have found this species slow and difficult to germinate.  It may require different conditions than the standard for S. tuberosum.

Breeding

Crosses with S. tuberosum

 

Female Male Berry Set Seed Set Germination Ploidy Source
 S. tuberosum S. raphanifolium Low Low     Jackson (1999)
 S. raphanifolium S. tuberosum None None     Jackson (1999)
             

Crosses with other species

Jackson (1999) found 7-33% 2n pollen for varieties of this species.

Female Male Berry Set Seed Set Germination Ploidy Source