AR2005-7

Potato

Variety Description

Varieties used for comparison: 'Superior', 'Atlantic', 'Rochdale Gold-Dorée' and 'Kennebec'

Summary: The terminal leaflet of 'AR2005-7' is narrowly ovate in shape whereas it is broadly ovate in 'Superior', 'Atlantic' and 'Kennebec' and medium ovate in 'Rochdale Gold-Dorée'. The inner surface of the corolla of 'AR2005-7' is blue-violet whereas it is white on 'Rochdale Gold-Dorée' and 'Kennebec'. The prominence of the star on the corolla of 'AR2005-7' is very weak whereas it is medium to strong on 'Superior' and strong to very strong on 'Rochdale Gold-Dorée'. The texture of the skin of 'AR2005-7' is smooth whereas it is rough on 'Superior' and 'Atlantic'. The main colour of the tuber flesh of 'AR2005-7' is medium yellow whereas it is white on 'Superior', 'Atlantic' and 'Kennebec'. The intensity of anthocyanin colouration on the light sprout base of 'AR2005-7' is strong whereas it is weak on 'Superior' and 'Atlantic' and absent or very weak on 'Kennebec'. The pubescence on the light sprout base of 'AR2005-7' is absent or very sparse whereas it is dense on 'Superior' and medium on 'Atlantic', 'Rochdale Gold-Dorée' and 'Kennebec'. The intensity of anthocyanin colouration on the the light sprout tip of 'AR2005-7' is medium whereas it is absent or very weak on all of the reference varieties. The pubescence on the light sprout tip of 'AR2005-7' is absent or very sparse whereas it is medium on 'Superior' and dense on 'Atlantic' and 'Rochdale Gold-Dorée'.

Description:

PLANT: late season maturity, upright growth habit, intermediate type foliage structure
STEM: absent or very weak anthocyanin colouration, absent or very low swelling of nodes

LEAVES: medium green, closed to intermediate silhouette, absent or very weak intensity of anthocyanin colouration on upper side of rachis, weak waviness of margin, medium presence of secondary leaflets
TERMINAL LEAFLET: narrowly ovate shape, acuminate tip, cordate base, absent or very low frequency of coalescence with lateral leaflets
LATERAL LEAFLET: medium to large size, elliptical shape, acuminate tip, cordate base

INFLORESCENCE: medium flowering profusion, medium size, weak intensity of anthocyanin colouration of flower bud
COROLLA: blue-violet, weak to medium anthocyanin colouration on inner surface, medium size, very weak prominence of star, absent or very weak anthocyanin colouration on peduncle

TUBER: round
TUBER SKIN: yellow, yellow at base of eye, smooth
TUBER EYES: shallow
TUBER FLESH: medium yellow, no secondary colour

LIGHT SPROUT: medium size, ovoid shape, few root tips, short lateral shoots
BASE: strong anthocyanin colouration, absent or low proportion of blue in anthocyanin colouration, absent or very sparse pubescence
TIP: smaller than base in size, intermediate habit, medium anthocyanin colouration, absent or very sparse pubescence

Origin & Breeding History: 'AR2005-7' originated through the hybridization of 'N0585-6' and 'AC Chaleur' conducted in Fredericton, New Brunswick in 1997. Initial selections were carried out in 1999. Selection criteria included adaptation, tuber type and fresh market quality.

Tests & Trials: The tests and trials for 'AR2005-7' 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 'AR2005-7' with reference varieties 'Superior', 'Atlantic', 'Rochdale Gold-Dorée' and 'Kennebec'

Plant height (cm)

Colour of corolla (RHS)

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Potato: 'AR2005-7' (left) with reference variety 'Atlantic' (right)

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Potato: 'AR2005-7' (left) with reference variety 'Kennebec' (right)

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Potato: 'AR2005-7' (left) with reference variety 'Rochdale Gold-Dorée' (right)