Illustrated variety description

Monalisa

Genetic origin : Bierma A 1287 X Colmo
Breeder(s) : F.G. VAN DER ZEE et de Z.P.C. - (PAYS BAS)
Registered in the : Catalogue français (1982)
Type : Liste A
Category : Consommation
Maturity : Medium-early

Descriptive characters

Tuber : Oval, very regular, very shallow eyes, yellow skin, yellow flesh.

Sprout : Red purplish, conical, medium hairiness.

Plant : rather tall, upright habit, branching type.

Stem : Internodes fairly pigmented, nodes very slightly pigmented, with straight and wavy wings.

Leaf : Clear green, moderately divided, half-opened; medium-sized leaflet, round oval (I = 1.51); blistered lamina.

Flowering : Abundant.

Flower : White, partially pigmented flower bud.

Fruit : Very rare.

Growing and use-related characters

Yield : 102 % of Bintje.

Grading : Proportion of large tubers: high.

Susceptibility to diseases :
Leaf blight : rather slightly susceptible.
Tuber blight : moderately susceptible.
Black wart : not attacked.
Common scab : fairly susceptible.
Virus X : NTR.
Virus A : resistant.
Virus Y : slightly susceptible.
Leaf roll : slightly susceptible.
Nematode RO 1-4 : NTR.

Internal tuber defect : Slightly susceptible to rust spots, very slightly susceptible to hollow heart and slightly susceptible to black spots.

Susceptibility to desprouting : Susceptible.

Dormancy period : Fairly long.

Culinary quality : Table-use group A-B, blackening after cooking: nil, fry colour: NTR.

Dry matter content : Low.

Keeping quality : Medium.

General characters

Variety slightly earlier than BINTJE, giving very regular tubers of excellent presentation.