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Denomination: 'Winema'
Botanical Name: Solanum tuberosum
Applicant/Holder: Oregon State University
Office of Commercialization and Corporate Development
312 Kerr Administration Building
Corvallis, Oregon
United States of America
Breeder: Alvin R. Mosley, Oregon State University, Corvallis, United States of America
Agent in Canada: Global Agri Services Inc.
376 New Maryland Highway
New Maryland, New Brunswick
E3C 1E5
Tel: 506-462-9493
Application Date: 2007-02-14(priority claimed)
Application Number: 07-5734
Protective direction granted: 2007-02-14
Grant of Rights Date: 2009-03-18
Certificate Number: 3470
Date rights surrendered: 2015-03-02

Variety Description

Variety used for comparison: 'Norland'

Summary: 'Winema' has a stronger anthocyanin colouration on the stem and the flower bud than 'Norland'. The leaves of 'Winema' are larger than those of 'Norland'. 'Winema' has a medium flowering profusion while it absent or very low for 'Norland'. 'Winema' has broad cylindrical light sprouts while they are ovoid for 'Norland'. The proportion of blue in anthocyanin colouration is moderate for 'Winema' while it is absent or low for 'Norland'.


PLANT: semi-upright growth habit, leaf type foliage structure
STEM: strong anthocyanin colouration evenly distributed, thin, nodes with absent or very low swelling

LEAVES: dark green, intermediate silhouette, strong anthocyanin colouration on upper side of rachis and petiole, medium depth of veins, medium waviness of margin, strong glossiness on upper side, no pubescence on leaves of apical rosette, medium presence of secondary leaflets
TERMINAL LEAFLET: medium ovate shape, acute tip, obtuse to cordate base, absent or very low frequency of coalescence with lateral leaflets
LATERAL LEAFLET: medium in size, narrow ovate shape, acute tip, cordate base

INFLORESCENCE: medium flowering profusion, small, flower buds are persistent, strong anthocyanin colouration of flower bud
COROLLA: red-violet, medium size, prominant star, strong anthocyanin colouration on the inner side, medium anthocyanin colouration on peduncle

TUBER: round
TUBER SKIN: red, red at base of eye, smooth texture
TUBER EYES: shallow, even distribution, slight prominence of eyebrows
TUBER FLESH: white, no secondary colour

LIGHT SPROUT: small, broad cylindrical shape, many root tips, medium length lateral shoots
BASE: strong anthocyanin colouration, medium proportion of blue in anthocyanin colouration, very dense pubescence
TIP: smaller than base in size, closed habit, medium anthocyanin colouration, absent or very sparse pubescence

Origin & Breeding History: 'Winema' was selected at Klamath Falls, Oregon, in 1989 from a cross between 'Redsen' and 'ND1196-2R'. The main selection criteria included colour, small tuber size, tuber uniformity, roundness/smoothness, marketable yield and overall performance relative to other leading red varieties.

Tests & Trials: Trials for 'Winema' were conducted in Drummond, New Brunswick in 2007. All entries were planted in single-row plots. Plots consisted of rows 22 metres long with 30 cm in row spacing between plants and spacing between rows of 91 cm. Measured characteristics were based on 10 measurements. Colour determinations were made using the 1986 RHS colour chart.

Comparison tables for 'Winema' with reference variety 'Norland'

Leaf length (including petiole) (cm)

  'Winema' 'Norland'
mean 29.0 24.8
std. deviation 3.1 1.6

Leaf width (cm)

  'Winema' 'Norland'
mean 19.4 15.5
std. deviation 3.6 3.3

Click on image for larger view
Potato: 'Winema' (right) with reference variety 'Norland' (left)

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