O'sirene

Tuber: Oblong to elongated oblong, very regular, very shallow eyes, yellow skin, yellow flesh

Flower: Very pale purple, partially pigmented flower bud

Sprout: Purple, conical, heavily hairy

Plant: Medium size, intermediate growth habit, semi-leafy type

Stem: Internodes moderately pigmented, nodes very slightly pigmented, with developed wings, straight and wavy

Leaf: Light green, slightly divided, semi-open; large, rounded oval leaflet (l = 1.59); semi-blistered leaf blade

Flowering: Abundant

Fruit production: Moderately abundant

Yield of Osirenne potato plant: 109% of Bintje

Sizing: Proportion of large tubers: high

Leaf blight: susceptible

Tuber blight: fairly resistant

Warty gall: susceptible

Common scab: moderately susceptible

Virus X: N/A

Virus A: N/A

Virus Y: moderately susceptible

Curling: moderately susceptible

RO 1-4 nematode: no reports

Internal tuber defects: not very susceptible to rust spots and hollow heart, susceptible to ash spots

Susceptibility to sprouting: moderately susceptible

Susceptibility to impact: fairly susceptible

Vegetative rest: fairly short

Culinary quality: Good cooking quality, culinary group B

Blackening after cooking: none

Colouring when fried: none

Dry matter content: Low to very low

Storage capacity: Fairly low

Early variety, productive, with good early tuberisation, producing large, fairly elongated tubers with an attractive appearance, but p

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