RUBIS Seed potatoes Rubis
Genetic origin: Roseval X INRA 71
Breeder (s): Britons Federation of Trade Unions – France
Catalogue registration: 1993
Tuber: Long oval, regular, very shallow eyes,
red skin, pale yellow flesh .
Sprout: Purplish red, cylindrical, very strong hair.
Plant: Medium height, semi-upright habit, leafy type.
Stem: Weak pigmentation, with narrow, straight wings.
Leaf: Clear green, matt, moderately divided, half-opened;
leaflet average, elongated oval (I = 1, 90); limbus plan.
Flowering: Moderately profuse.
Flower: Purplish red, partially pigmented flower bud.
Fruit: Moderately abundant.
cropping characters and use
Yield: 92% of Bintje.
Grading: Proportion of large tubers: high.
disease Sensitivity: Mildew foliage: fairly susceptible.
Tuber blight: moderately susceptible.
wart: sensitive. Common scab: moderately
susceptible. Virus X: NTR Virus A: NTR Virus Y: fairly susceptible.
Leaf roll: moderately susceptible.
Internal tuber defects: Fairly susceptible to
stains. Rust, slightly susceptible to hollow heart and black spots
Sensitivity to sprouting: Moderately susceptible.
Dormancy period: Fairly short.
Culinary quality: Fairly good to good for cooking,
culinary group B, slight blackening after cooking, colouration
Dry matter content:. Low
Keeping quality : Avg.
mid-early variety, giving large tubers with red skin, regular shape.