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AAC Brookville

Potato

Denomination: 'AAC Brookville'
Previously Proposed Denomination: 'CV01238-3'
Botanical Name: Solanum tuberosum
Applicant/Holder: Colorado State University Research Foundation
P.O. Box 483
Fort Collins, Colorado
80522
United States of America
Breeder: David Holm, Colorado State University, Center, United States of America
Benoit Bizimungu, 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
Canada
Tel: (306) 385-9316
Application Date: 2017-05-02
Application Number: 17-9210
Grant of Rights Date: 2020-05-13
Certificate Number: 6191
Grant of Rights Termination Date: 2040-05-13

Variety Description

Variety used for comparison: 'Russet Burbank'

Summary: The lightsprout of 'AAC Brookville' is broad cylindrical in shape whereas the lightsprout of 'Russet Burbank' is ovoid. The lightsprout of 'AAC Brookville' is medium to large with many root tips and medium length lateral shoots whereas that of 'Russet Burbank' is small to medium with few root tips and short lateral shoots. At the base of the lightsprout, the proportion of blue is medium for 'AAC Brookville' whereas the proportion of blue is absent or low for 'Russet Burbank'. The pubescence on the lightsprout of 'AAC Brookville' is sparse whereas the pubescence is of medium density at the base and dense at the tip of the lightsprout for 'Russet Burbank'. The plant of 'AAC Brookville' has a spreading growth habit while the plant of 'Russet Burbank' has a semi-upright growth habit. The extent of anthocyanin colouration on the stem of 'AAC Brookville' is low whereas it is absent or very low on the stem of 'Russet Burbank'. The leaf outline of 'AAC Brookville' is small to medium whereas it is medium to large for 'Russet Burbank'. The openness of the leaf of 'AAC Brookville' is intermediate between open and closed whereas the leaf of 'Russet Burbank' is open. The upper side of the leaf of 'ACC Brookville' is medium to dark green whereas the leaf of 'Russet Burbank' is light to medium green.

Description:

LIGHTSPROUT: medium to large, broad cylindrical, many root tips, medium length of lateral shoots
LIGHTSPROUT BASE: medium intensity of anthocyanin colouration, medium proportion of blue in anthocyanin colouration, sparse pubescence
LIGHTSPROUT TIP: medium size in relation to base, closed habit, weak to medium intensity of anthocyanin colouration, sparse pubescence

PLANT: foliage structure is intermediate type where foliage is half-open and stems are partly visible, spreading growth habit, matures mid-season

STEM: low extent of anthocyanin colouration halfway up stem

LEAF: small to medium size outline, intermediate openness, medium presence of secondary leaflets, medium to dark green upper side, absent or very low extent and absent or very weak intensity of anthocyanin colouration of upper side of midrib, absent or very low frequency of coalescence of terminal and lateral leaflets
SECOND PAIR OF LATERAL LEAFLETS: medium size, leaflet is narrower than long
LEAFLET: weak waviness of margin, medium depth of veins, dull upper side, pubescence on blade at apical rosette

PEDUNCLE: absent or very low extent of anthocyanin colouration
INFLORESCENCE: medium frequency per plant, medium size
FLOWER BUD: low to medium extent of anthocyanin colouration
COROLLA: medium size
COROLLA (INNER SIDE): absent or very low extent of anthocyanin colouration, absent or very weak intensity of anthocyanin colouration, absent or low proportion of blue in anthocyanin colouration

TUBER: long, white flesh
TUBER EYE: medium depth, white at base
TUBER SKIN: reddish brown

Origin & Breeding History: 'AAC Brookville' (experimental designations 'AR2010-01' and 'CV01238-3') originated from a cross made between the varieties 'AO92128-4.1' and 'Silverton Russet' conducted at the Colorado State University San Luis Valley Research Centre, in Center, Colorado, USA, in 2001. In 2002, the true potato seed resulting from the cross was sown in a greenhouse at Colorado State University and the resulting seedling tubers planted at the Vauxhall Research Substation of Agriculture and Agri-Food Canada in Vauxhall, Alberta, in 2003. A clone designated as 'CV01238-3' was selected in 2003 from a single hill trial based on vine maturity, tuber appearance, shape and size.

Tests & Trials: The comparative trial for 'AAC Brookville' was conducted during the 2018 growing season at Agriculture and Agri-Food Canada's Fredericton Research and Development Centre, in Fredericton, New Brunswick. The trial consisted of 2 replicates of 30 plants per replicate for each variety, grown in two 7.5 metre length rows spaced 90 centimetres apart. The plants were spaced 25 centimetres apart within the row. The measurements were taken from 10 plants, or 10 parts of plants, of each variety.

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AAC Brookville
Potato: 'AAC Brookville' (left) with reference variety 'Russet Burbank' (right)

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AAC Brookville
Potato: 'AAC Brookville' (top) with reference variety 'Russet Burbank' (bottom)

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