ROSA Seed potatoes Rosa

Seed potatoes

Seed potatoes

Genetic origin: Fly X Rosa

Breeder (s): Federation of Britons Unions – France

Catalogue registration: 1950

Category: flesh consumption farm

Maturity: Medium-late.

Descriptive characters

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.

Flowering: Abundant.

Flower: Purplish red, large white points, flower bud

partially pigmented.

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

General characters

vigorous variety giving numerous tubers, of medium height, beautiful presentation of their regularity and color. The well-yellow flesh is however sometimes veined pink.