Sweet cherry

Variety: Irena (S)

Species: Prunus avium

Origin

Breeder, Place

Blazek, Holovousy, Czech Republic

Intellectual property

Artevos, Germany

Parents

Kordia x M. Reward

Crossing number

HL 13 822

Property rights

registered for EU plant variety rights

Blossom

Blooming date

late

Fertility

self-sterile

S-allele, sterility group

S4 S6, group 17

Pollinator

Carmen (S), Early Korvik (S), PAPILLON ™ Pillangó (S), Walter (S), Kordia, STARDUST ™ 13 N 07-70 (S), Henriette (S), Areko (S), KIR VULCANO ™ 16 A (S), Regina, KIR LAMOUR ™ KSG 03 A (S), CERASINA ™ Final 12.1 (S)

Fruit

Ripening time

late, 7. cherry week

Scale, shape

medium to large, 27-30 mm, 11-13 g, heart-shaped with slight shoulders, long to very long stalk

Colour

dark to black red, very shiny

Fruit flesh

dark to black red, medium firm, Durofel pressure 25: 70-75, firm skin, soft flesh, juicy

Taste

emphasized acidity just before maturity, at full maturity mild taste with balanced acidity

Cracking sensitivity

very low to low, tends to crack only around the stalk cavity at full maturity after heavy rainfall

Tree

Vigour

weak to medium strong, strong central leader, weak lateral branches, at mature stage spreading to pendulous, very good branching, thorough pruning of pendulous bearing wood necessary, healthy and dark green foliage

Crop load

high to very high, fruits are hanging very densely without clusters, good picking rate because of the long stalks

Evaluation

This shortly before 'Regina' ripening cherry yields well from the beginning. When overcropping the flavour and firmness dissipates. The acid content of the fruits determines the possible harvest date.

Irena (S) is well suited as a pollinator for 'Regina'.

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