The European Cultivated Potato Database

 
 

Rex

[pedigree] [parents] [similar varieties][tabulated data]
HIGHER TAXON: Solanaceae
GENUS:Solanum L.
Solanum tuberosum L. cv. Rex
Pedigree: 537 01 x Granola [6,13]
Kero x Gloria [19]
Breeder: Saka Pflanzenzucht, Kielortallie, Hamburg [13,19]
Breeder's rights: No [13]
Synonyms:
National list:
ADMINISTRATION
Country of originGERMANY [6, 13]
Data sourceCZEHBROD [6] GBR165 [13] NIVAA [19]
Plant health directive EC77/93, requirementsFully tested [13] Part tested [6]
Plant material maintained asTuber [13] In-vitro [6]
Sample statusAdvanced cultivar [6, 13, 19]
Test conditionsNon organic [6, 13]
PLANT CHARACTERISTICS
BerriesRare [13]
Flower colourRed violet [13]
Flower frequencyOccasional [13]
Foliage coverModerate [13]
Growth habitSemi erect [13]
Light sprout colourPink [13]
MaturityIntermediate [13] Early [19]
TUBER CHARACTERISTICS
Primary tuber flesh colourDeep yellow [13]
Tuber eye colourYellow [13]
Tuber eye depthShallow [13]
Tuber shapeOval to round [13, 19]
Tuber skin colourWhite to yellow [13, 19]
Tuber skin textureSmooth [13]
TUBERING CHARACTERISTICS
Dormancy periodVery long [13, 19]
Early harvest yield potentialHigh to very high [19]
Resistance to external damageSusceptible to moderate [19]
Resistance to internal bruisingMedium [19]
Secondary growthMedium to high [19]
Tuber shape uniformityUniform [19]
Tuber sizeMedium to large [19]
Tubers per plantMany [19]
UTILISATION CHARACTERISTICS
After cooking blackeningNone [19]
Cooking type / 411 Cooked textureFairly firm (multi-purpose type) [13] Very mealy (floury type) to mealy (floury type) [19]
Crisp suitabilityPoor [13, 19]
Dry matter contentLow to medium [13, 19]
French fry suitabilityPoor [13, 19]
RESISTANCE TO FUNGAL DISEASES
Field immunity to wart racesRace 1 [19]
Resistance to dry rot (Fusarium spp.)High [13]
Resistance to gangrene (Phoma foveata)Very high [13]
Resistance to late blight on foliage(Artificial inoculum in the field)Low to medium [19]
Resistance to late blight on foliage(Laboratory test)Medium to high [13]
Resistance to late blight on tubers(Artificial inoculum in the field)Medium to high [19]
Resistance to late blight on tubers(Laboratory test)Medium [13]
Wart (Synchytrium endobioticum)Susceptible [13] Field immune [19]
RESISTANCE TO BACTERIAL DISEASES
Resistance to common scab (Streptomyces scabies)Low to medium [13]
RESISTANCE TO VIRUS DISEASES
Resistance to potato leaf roll virusMedium [19] High [13]
Resistance to potato virus AVery high [13, 19]
Resistance to potato virus XHigh to very high [19] Very high [13]
Resistance to potato virus Y (strain not specified)High [19] Very high [13]
RESISTANCE TO PESTS
Resistance to Globodera rostochiensis race 1High [13]
ENVIRONMENTAL STRESS FACTORS
Drought resistanceHigh [13, 19]


Source:
[6] Potato Research Institute, CZECH REPUBLIC 2010
[19] Nederlands Potato Consultative Foundation (NIVAP), NETHERLANDS 2005
[13] SASA, UNITED KINGDOM 2005















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