ROSA Seed potatoes Rosa
Genetic origin: Fly X Rosa
Breeder (s): Federation of Britons Unions – France
Catalogue registration: 1950
Category: flesh consumption farm
Tuber: claviforme very regular, very shallow eyes,
red skin, . yellow
flesh. Sprout: Purplish red, conical, very hairy
Plant: Tall, upright habit, branching types.
Stem: strong pigmentation, with developed wings, straight.
Leaf: Light green, little divided, half-opened; Average leaflet, oval
extended (I = 1.88); Semi-Knocked limb.
Flower: Purplish red, large white points, flower bud
Fruit: Very rare.
cropping characters and use
Yield: 96% of Bintje.
Grading: Proportion of large tubers: medium.
Susceptibility to diseases: Leaf blight: fairly susceptible.
Tuber blight: susceptible. Black wart: not attacked.
Common scab: slightly susceptible. Virus X: NTR
Virus A: NTR Virus Y: susceptible. Leaf roll: susceptible.
Nematode ROI -4: RAS
Internal tuber defects: Slightly susceptible to stains
rust and hollow heart, black spots: NTR
Sensitivity to sprouting: Rather slightly susceptible.
Dormancy period: Average.
Culinary quality: held cooking,
culinary group A very slight blackening after cooking,
fry color: none.
Dry matter content:. Fairly low
Keeping quality. Pretty good
vigorous variety giving numerous tubers, of medium height, beautiful presentation of their regularity and color. The well-yellow flesh is however sometimes veined pink.