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AAC Madam Blue


Denomination: 'AAC Madam Blue'
Previously Proposed Denomination: 'AR2004-8'
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: Kenneth Proudfoot, 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: 2012-04-30(priority claimed)
Application Number: 12-7602
Protective direction granted: 2012-04-30
Grant of Rights Date: 2013-07-03
Certificate Number: 4565
Grant of Rights Termination Date: 2031-07-03

Variety Description

Variety used for comparison: 'Brigus'

Summary: 'AAC Madam Blue' has a very strong intensity of anthocyanin colouration at the base of the lightsprout while it is strong for 'Brigus'. The pubescence at the base of the lightsprout of 'AAC Madam Blue' is dense while it is sparse to medium density for 'Brigus'. 'AAC Madam Blue' has a stem type foliage structure while it is leaf type for 'Brigus'. The leaf outline of 'AAC Madam Blue' is small to medium size while it is large for 'Brigus'. 'AAC Madam Blue' has a small second pair of lateral leaflets while it is medium to large for 'Brigus'. The plant height at flowering for 'AAC Madam Blue' is taller than 'Brigus'.


PLANT: stem type foliage structure, semi-upright growth habit, medium to late maturity

STEM: high to very high anthocyanin colouration along entire length

LEAVES: small to medium outline, intermediate to open openness, medium presence of secondary leaflets, dark green, high extent of strong intensity of anthocyanin colouration on the midrib of the upper side, absent or very low frequency of coalescence of terminal and lateral leaflets
SECOND PAIR OF LATERAL LEAFLETS: small size, narrower than long width in relation to length
LEAFLET: absent or very weak waviness of margin, medium depth veins, dull glossiness of upper side

INFLORESCENCE: high frequency per plant, large, high extent of anthocyanin colouration on peduncle
FLOWER BUD: low to medium extent of anthocyanin colouration
COROLLA: large, high extent of anthocyanin colouration on the inner side, anthocyanin strong in intensity with high proportion of blue

TUBER: round, cream coloured flesh
TUBER EYES: medium depth
TUBER SKIN: blue, blue at base of eye

LIGHTSPROUT: medium size, broad cylindrical, few to medium number of root tips, short lateral shoots
LIGHTSPROUT BASE: very strong intensity of anthocyanin colouration, high proportion of blue in the anthocyanin colouration, dense pubescence
LIGHTSPROUT TIP: medium size in relation to base, closed habit, strong intensity of anthocyanin colouration, medium pubescence

Origin & Breeding History: 'AAC Madam Blue' (experimental designations F99058, AR2004-8) originated from a cross made in 1991 between N1618A x N1653-7 in St. John's, Newfoundland. It was transferred to Fredericton in 1998 and introduced to Benton for evaluation as F99058 in 1999. Selection criteria included adaptation, tuber type, fresh market potential and disease resistance.

Tests & Trials: Trials were conducted in 2012 at the Agriculture Agri-Food Potato Research Station in Fredericton, New Brunswick. Plots consisted of a single row with a row length of 7.5 meters and a row spacing of 0.9 meters. Plants were spaced 0.25 meters within the row. There were 2 replicates.

Comparison table for 'AAC Madam Blue' with reference variety 'Brigus'

Plant height at flowering (cm)

  'AAC Madam Blue' 'Brigus'
mean 74 52
std. deviation 3.8 5.1

Click on image for larger view
AAC Madam Blue
Potato: 'AAC Madam Blue' (top) with reference variety 'Brigus' (bottom)

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