The British Potato Variety Database

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Isle Of Jura

Scottish Seed Stocks  
English Seed Register
ParentageNavan x 81C117-13
BreederCygnet PB Ltd
Breeder's AgentCygnet PB Ltd
Plant Breeders Rights (expire)2032

Isle of Jura is suitable for the pre-pack, general ware and export markets thanks to excellent flavour. Large tuber numbers allow high yield of 45x65mm ware. It has medium dry matter and boils extremely well. Good resistance to powdery scab, blackleg, gangrene, potato virus Yo and spraing. tests show susceptibility to Black dot, Dry rot Fusarium coeruleum and Fusarium sulphureum , late blight on foliage, Silver scurf. Tests found susceptibility to potato cyst nematode Globodera pallida Pa2/3,1 and resistance to Globodera rostochiensis Ro1.
Isle Of Jura
Isle Of Jura
  

Tuber characteristics
Smoothness of skin Smooth
Shape of tuber Oval - long
Depth of eyes Shallow
Colour of skin White
Colour of flesh Cream
  
Botanical description
Maturity Maincrop
Height of plants Medium
Frequency of berries Few
Colour of flower White
Colour of base of lightsprout Pink

Resistance to Damage, Pests and DiseasesLow.......High
Black dot ( Colletotrichum coccodes ) 
.
2
       
Dry rot ( Fusarium coeruleum ) 
.
.
3
      
Dry rot ( Fusarium sulphureum ) 
.
.
3
      
Late blight on foliage ( Phytophthora infestans )  
.
.
3
      
Late blight on tubers ( Phytophthora infestans ) 
.
.
.
.
5
    
Powdery scab ( Spongospora subterranea ) 
.
.
.
.
5
    
Silver scurf ( Helminthosporium solani ) 
.
.
3
      
Skin spot ( Polyscytalum pustulans ) 
.
.
.
4
     
Blackleg ( Pectobacterium atrosepticum )  
.
.
.
.
.
.
7
  
Common scab ( Streptomyces scabiei ) 
.
.
.
.
5
    
Potato Cyst Nematode ( Globodera pallida Pa 2/3, 1 ) 
.
2
       
Potato Cyst Nematode ( Globodera rostochiensis Ro1 ) 
.
.
.
.
.
.
.
.
9
Potato Leafroll Virus 
.
.
.
4
     
Potato Virus Yo  
.
.
.
.
.
.
.
.
9
Bruising 
.
.
.
4
     
Splitting 
.
.
.
.
5
    

Results of National List and Potato Council Independent Variety Trials