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Denomination: 'Mozart'
Botanical Name: Solanum tuberosum
Applicant/Holder: IPR B.V.
P.O. Box 88
8500 AB
Breeder: R. P. Graveland, IPR B.V., Joure, Netherlands
Agent in Canada: Global Agri Services Inc.
376 New Maryland Highway
New Maryland, New Brunswick
E3C 1E5
Tel: 506-462-9493
Application Date: 2006-01-18
Application Number: 06-5213
Grant of Rights Date: 2008-06-26
Certificate Number: 3240
Grant of Rights Termination Date: 2026-06-26

Variety Description

Variety used for comparison: 'Desiree'

Summary: 'Mozart' has a shorter plant height than 'Desiree'. 'Mozart' has darker leaf colour than 'Desiree'. The tuber of 'Mozart' has white at the base of the eye while the tuber of 'Desiree' has red at the base of the eye. 'Mozart' has shallower tuber eyes than 'Desiree'. 'Mozart' has a spherical shaped light sprout while 'Desiree' has a broad cylindrical shaped light sprout. 'Mozart' has stronger anthocyanin colouration at the base of the light sprout with a higher proportion of blue than 'Desiree'.


PLANT: semi-upright to spreading growth habit, stem to intermediate type foliage structure
STEM: medium to strong anthocyanin colouration evenly distributed along the stem, medium thickness, nodes with absent to very low swelling

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

INFLORESCENCE: high flowering profusion, medium size, flower buds persistent, absent to weak anthocyanin colouration in flower bud.
COROLLA: red-violet, medium anthocyanin colouration on inner side, medium to large size, moderately prominent star, strong anthocyanin colouration on peduncle

TUBER: round to oval
TUBER SKIN: red, white at base of eye, smooth texture
TUBER EYES: shallow in depth, evenly distributed, eyebrows slightly prominent
TUBER FLESH: medium yellow, no secondary colour

LIGHT SPROUT: small to medium size, spherical, low number of root tips, short lateral shoots
BASE: strong anthocyanin colouration, medium proportion of blue in anthocyanin, medium pubescence
TIP: smaller than base in size, closed habit, weak anthocyanin colouration, sparse pubescence.

Origin & Breeding History: 'Mozart' originated from a cross between 'Redstar' and 'Caesar', made at Metslawier, The Netherlands in 1991. The variety was selected from the F1 of the cross. Selection criteria included yield, internal and external quality and resistance to diseases and pests.

Tests & Trials: Trials for 'Mozart were conducted in Drummond, New Brunswick in 2006. All entries were planted in single-row plots. Plots consisted of rows 22 metres long with 30 cm in row spacing and between row spacing of 91 cm. Measured characteristics were based on 10 measurements. Colour determinations were made using the 1986 RHS colour chart.

Comparison tables for 'Mozart' with reference variety 'Desiree'

Plant height (cm)

  'Mozart' 'Desiree'
mean 37.6 45.6
std. deviation 4.0 4.4

Colour of corolla (RHS)

  'Mozart' 'Desiree'
inner surface 76A 84B

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

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