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Denomination: 'AR2007-4'
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: Agnes Murphy, 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: 2009-04-22(priority claimed)
Application Number: 09-6621
Protective direction granted: 2009-04-22
Grant of Rights Date: 2011-03-18
Certificate Number: 4035
Date rights surrendered: 2013-06-18

Variety Description

Varieties used for comparison: 'Atlantic' and 'Superior'

Summary: The plants of 'AR2007-4' are shorter than those of 'Atlantic'. The anthocyanin colouration on the stem of 'AR2007-4' is medium while it is absent or very weak on 'Superior'. The lateral leaflets of 'AR2007-4' are medium to large in size whereas they are small to medium in 'Superior'. Flowering profusion of 'AR2007-4' is low while it is high in 'Atlantic' and very high in 'Superior'. The inner surface of the corolla of 'AR2007-4' is white whereas it is blue-violet on all of the reference varieties. The intensity of anthocyanin colouration on inner surface of the corolla of 'AR2007-4' is very weak while it is medium on the reference varieties. The colour of base of the tuber eye of 'AR2007-4' is light brown whereas it is white on all of the reference varieties. The tuber shape of 'AR2007-4' is round whereas it is oval in 'Superior'. The tuber flesh of 'AR2007-4' is cream whereas that of 'Atlantic' and 'Superior' are white. The general shape of the light sprout of 'AR2007-4' is ovoid whereas it is broad cylindrical in 'Superior'. The intensity of anthocyanin colouration at the base of the light sprout of 'AR2007-4' is strong whereas it is weak on 'Atlantic' and medium on 'Superior'. Pubescence at the base of the light sprout of 'AR2007-4' is sparse whereas it is medium on all of the reference varieties.


PLANT: upright to semi-upright growth habit, leaf type foliage structure

STEM: medium anthocyanin colouration, medium thickness of main stem, absent or very weak swelling at nodes

LEAVES: medium to dark green, closed to intermediate silhouette, medium anthocyanin colouration on upper side of rachis and petiole, low frequency of coalescence, shallow depth of veins, weak waviness of margin, dull glossiness of upper side, weak density of pubescence, medium presence of secondary leaflets
TERMINAL LEAFLET: elliptical, cuspidate tip, lobed base
LATERAL LEAFLET: medium to large size, elliptical, acute tip, cordate base

INFLORESCENCE: low flowering profusion, small size
FLOWER BUD: medium persistence, absent or very weak intensity of anthocyanin colouration
COROLLA: white, very weak anthocyanin colouration on inner surface, large size, medium prominence of star
PEDUNCLE: absent or very weak anthocyanin colouration

TUBER: round, cream flesh with no secondary colour
TUBER EYES: intermediate depth, apical distribution, medium prominence of eyebrows
TUBER SKIN: light beige, light beige at base of eye, rough texture

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

Origin & Breeding History: 'AR2007-4' (experimental designations 13601-09 and F01044) originated from the cross of 'Brigus' and 'F58089' made in 1999 in Fredericton, New Brunswick. Selection criteria were clonal selection for adaptation, tuber type and fresh quality market.

Tests & Trials: Trials for 'AR2007-4' were conducted at Potato Research Centre, Fredericton, New-Brunswick, in 2009. There were two replicates of 30 plants with a plant spacing of 30 cm.

Comparison table for 'AR2007-4' with reference varieties 'Atlantic' and 'Superior'

Plant height (cm)

  'AR2007-4' 'Atlantic' 'Superior'
mean 23 32 20
standard deviation 2.05 3.99 3.45

Click on image for larger view
Potato: 'AR2007-4' (left) with reference varieties 'Atlantic' (center) and 'Superior' (right)

Click on image for larger view
Potato: 'AR2007-4' (left) with reference varieties 'Atlantic' (center) and 'Superior' (right)

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