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Denomination: 'AR2006-4'
Trade name: CubiK
Botanical Name: Solanum tuberosum
Applicant/Holder: Agriculture & Agri-Food Canada, Fredericton
Fredericton Research and Development Centre
850 Lincoln Road, P.O. Box 20280
Fredericton, New Brunswick
E3B 4Z7
Breeder: T. Richard Tarn, Agriculture & Agri-Food Canada, Fredericton, New Brunswick
Agent in Canada: Agriculture & Agri-Food Canada
Office of Intellectual Property and Commercialization
107 Science Place
Saskatoon, Saskatchewan
S7N 0X2
Tel: (306) 385-9316
Application Date: 2008-06-09(priority claimed)
Application Number: 08-6374
Protective direction granted: 2008-06-09
Grant of Rights Date: 2010-02-22
Certificate Number: 3781
Grant of Rights Termination Date: 2028-02-22

Variety Description

Varieties used for comparison: 'Superior', 'Coastal Russet' and 'Russet Burbank'

Summary: The shape of the terminal leaflet base of 'AR2006-4' is lobed whereas it is cordate in 'Superior' and truncate in 'Russet Burbank'. The general shape of the light sprout of 'AR2006-4' is ovoid whereas it is broad cylindrical in 'Superior', conical in 'Coastal Russet' and spherical in 'Russet Burbank'. The intensity of anthocyanin colouration at the base of the light sprout of 'AR2006-4' is strong whereas it is medium on 'Superior' and 'Russet Burbank' and weak to medium in 'Coastal Russet'. The intensity of anthocyanin colouration at the tip of the light sprout of 'AR2006-4' is medium whereas it is absent or very weak on all of the reference varieties. The pubescence on the light sprout tip of 'AR2006-4' is medium in density whereas it is sparse on 'Superior and dense on 'Coastal Russet' and 'Russet Burbank'.


PLANT: mid to late season maturity, semi-upright growth habit, intermediate type foliage structure
STEM: weak to medium anthocyanin colouration distributed mainly at the base, low swelling of nodes

LEAVES: medium to dark green, intermediate silhouette, absent or very weak intensity of anthocyanin colouration on upper side of rachis, very weak waviness of margin, weak to medium presence of secondary leaflets
TERMINAL LEAFLET: broadly ovate shape, cuspidate tip, lobed base, absent or very low frequency of coalescence with lateral leaflets
LATERAL LEAFLET: small to medium size, broadly ovate shape, cuspidate tip, cordate base

INFLORESCENCE: medium to high flowering profusion, medium size, medium intensity of anthocyanin colouration of flower bud
COROLLA: blue-violet, medium anthocyanin colouration on inner surface, medium to large, medium to strong prominence of star, white petal tips, very weak anthocyanin colouration on peduncle

TUBER: oblong
TUBER SKIN: light brown russet, white at base of eye, russetted
TUBER EYES: shallow
TUBER FLESH: cream, no secondary colour

LIGHT SPROUT: medium size, ovoid shape, medium number of root tips, short lateral shoots
BASE: strong anthocyanin colouration, high proportion of blue in anthocyanin colouration, medium pubescence
TIP: smaller than base in size, closed habit, medium anthocyanin colouration, medium density pubescence

Origin & Breeding History: 'AR2006-4' originated through the hybridization of 'Frontier Russet' and 'F87070' conducted in Fredericton, New Brunswick in 1996. Initial selections were carried out in 2000. Selection criteria included adaptation, tuber type and fresh market quality.

Tests & Trials: The tests and trials for 'AR2006-4' were conducted at the Potato Research Centre, Agriculture and Agri-Food Canada, Fredericton, New Brunswick during the summer of 2008. The trials consisted of 2 replicates per variety, ranging from 20 to 25 plants per replicate, measuring approximately 11 metres in length. Measured characteristics were based on 10 measurements. Colour determinations were made using the RHS colour chart, 4th edition, 2001.

Comparison tables for 'AR2006-4' with reference varieties 'Superior', 'Coastal Russet' and 'Russet Burbank'

Plant height (cm)

  'AR2006-4' 'Superior' 'Coastal Russet' 'Russet Burbank'
mean 35 38 28 45
std. deviation 4.9 4.7 6.5 4.6

Colour of corolla (RHS)

  'AR2006-4' 'Superior' 'Coastal Russet' 'Russet Burbank'
inner surface N82B 84A 84B 155B

Click on image for larger view
Potato: 'AR2006-4' (left) with reference variety 'Russet Burbank' (right)

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Potato: 'AR2006-4' (left) with reference variety 'Coastal Russet' (right)

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Potato: 'AR2006-4' (left) with reference variety 'Superior' (right)

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