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Rabello

Lettuce

Denomination: 'Rabello'
Botanical Name: Lactuca sativa
Applicant/Holder: Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Burgemeester Crezeelaan 40
Postbus 40, 2678 ZG
De Lier
2678 KX
Netherlands
Breeder: Rijk Zwaan Zaadteelt en Zaadhandel B.V., De Lier, Netherlands
Agent in Canada: Rijk Zwaan Canada Ltd.
1008 Mersea Road 7
Leamington, Ontario
N8H 3V8
Canada
Tel: +1 519 322 0442
Application Date: 2023-03-24
Provisional Protection:: 2023-03-24
Application Number: 23-11251

Variety Description

Variety used for comparison: Estelena

Summary: The intensity of the green colour on the leaves of 'Rabello' is dark whereas that for 'Estelena' is medium to dark. The blistering on the leaves of 'Rabello' is of a medium degree whereas that for 'Estelena' is very weak to weak. The head for 'Rabello' is small to medium sized whereas the head for 'Estelena' is medium sized.

Description:

PLANT: gem type, open culture type, small to medium sized diameter, medium degree of overlapping of upper part of leaves, small to medium sized head, broad elliptic head shape in longitudinal section, medium to dense head, late harvest maturity, very late bolting, strong axillary sprouting, weak fasciation on bolting stem

LEAF: erect to semi-erect attitude, absent or very few divisions, broad elliptic to obovate shape, rounded tip, flat in longitudinal section, absent or very weak anthocyanin colouration, green, dark intensity of green colouration, weak to medium glossiness on upper side, medium thickness, medium degree of blistering, small to medium sized blisters, absent or very weak undulation of margin, non flabellate venation

SEED: white seed coat

DISEASE REACTIONS: resistance to Bremia lactucae isolates Bl: 16EU, Bl: 17EU, Bl: 20EU, Bl: 21EU, Bl: 22EU, Bl: 23EU, Bl: 24EU, Bl: 25EU, Bl: 26EU, Bl: 27EU, Bl: 29EU, Bl: 30EU, Bl: 31EU, Bl: 33EU, Bl: 35EU present; resistance to Lettuce mosaic virus (LMV) pathotype II absent; resistance to Nasonovia ribisnigri biotype Nr: 0 present

Origin & Breeding History: 'Rabello' (breeder's reference 41-CO7708 RZ) originated from a cross between two proprietary parent lines conducted in Spain in 2015. Final selection of 'Rabello' was made in January 2019 based on disease resistance and speed of bolting. The variety was stable after 5 generations of pedigree selection.

Tests & Trials: The detailed description of 'Rabello' is based on the UPOV report of Technical Examination, application number SLA4577, purchased from the Naktuinbouw in Roelofarendsveen, Netherlands. The trial was conducted by the Naktuinbouw in Roelofarendsveen, Netherlands from 2021 to 2022.

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Rabello
Lettuce: 'Rabello'

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Rabello
Lettuce: 'Rabello'

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Rabello
Lettuce: 'Rabello'

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