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Silverado

Potato

Denomination: 'Silverado'
Botanical Name: Solanum tuberosum
Applicant/Holder: IPR B.V.
P.O. Box 88
8500 AB
Joure
Netherlands
Breeder: R. P. Graveland, IPR B.V., Joure, Netherlands
Agent in Canada: HZPC-Americas Corp.
19 Regis Duffy Drive
Charlottetown, Prince Edward Island
C1E 0K5
Canada
Tel: 902-892-2004
Application Date: 2017-05-10
Application Number: 17-9218
Grant of Rights Date: 2020-02-21
Certificate Number: 6147
Grant of Rights Termination Date: 2040-02-21

Variety Description

Variety used for comparison: 'Russet Burbank'

Summary: The lightsprout of 'Silverado' is medium sized and has an ovoid shape whereas the lightsprout of 'Russet Burbank' is small and spherical. The proportion of blue anthocyanin colouration at the base of the lightsprout of 'Silverado' is medium whereas it is absent or low for 'Russet Burbank'. The pubescence at the tip of the lightsprout of 'Silverado' is medium to dense whereas it is absent or very sparse to sparse for 'Russet Burbank'. The plants of 'Silverado' have an upright growth habit whereas the plants of 'Russet Burbank' have an semi-upright growth habit. The presence of secondary leaflets on the leaves of 'Silverado' is medium to strong whereas it is weak to medium for 'Russet Burbank'. At the apical rosette, the leaflet blade of 'Silverado' is glabrous whereas it is pubescent for 'Russet Burbank'. The tuber of 'Silverado' has a long oval shape with shallow eyes whereas the tuber of 'Russet Burbank' is long with deep eyes.

Description:

LIGHTSPROUT: medium size, ovoid, few root tips, short lateral shoots
LIGHTSPROUT BASE: medium intensity of anthocyanin colouration, medium proportion of blue in anthocyanin colouration, sparse to medium density of pubescence
LIGHTSPROUT TIP: medium size in relation to base, intermediate between closed and open habit, absent or very weak intensity of anthocyanin colouration, medium to dense pubescence

PLANT: foliage structure is intermediate type where foliage is half-open and stems are partly visible, upright growth habit, mid-season to late maturity

STEM: absent or very low extent of anthocyanin colouration

LEAF: medium size outline, intermediate openness, medium to strong presence of secondary leaflets, medium to dark green upper side, absent or very low extent and absent or very weak intensity of anthocyanin colouration of upper side of midrib, absent or very low frequency of coalescence of terminal and lateral leaflets
SECOND PAIR OF LATERAL LEAFLETS: medium size, leaflet is narrower than long
LEAFLET: weak waviness of margin, medium depth of veins, medium to glossy upper side, glabrous blade at apical rosette

PEDUNCLE: absent or very low extent of anthocyanin colouration
INFLORESCENCE: low frequency per plant, small
FLOWER BUD: absent or very low extent of anthocyanin colouration
COROLLA: medium size
COROLLA (INNER SIDE): absent or very low extent of anthocyanin colouration, absent or very weak intensity of anthocyanin colouration, absent or low proportion of blue in anthocyanin colouration

TUBER: long oval, white flesh
TUBER EYE: shallow depth, yellow at base
TUBER SKIN: reddish brown

Origin & Breeding History: 'Silverado' (experimental designation HZ-04-2047) originated from the cross between 'RZD 94-2545', as the female parent, and 'RZ-94-6820' as the male parent, conducted in 2003 at HZPC Research B.V., in Metslawier, The Netherlands. One of the progeny, designated as HZ-04-2047, was identified in 2004 and subsequently tested in The Netherlands and other locations abroad. Selection criteria was based on yield, internal and external quality as well as disease and insect resistance.

Tests & Trials: The comparative trial for 'Silverado' was conducted by Global Agri Services Inc. during the 2018 growing season in Drummond, New Brunswick. The trial consisted of a single, 21 metre long row containing 70 plants spaced 0.3 metres apart for each variety. The distance between rows within the trial was 0.9 metres. Observations and measurements were taken from 10 plants, or 10 parts of plants, of each variety.

Click on image for larger view
Silverado
Potato: 'Silverado' (left) with reference variety 'Russet Burbank' (right)

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