Red Carré

Potato

Variety Description

Variety used for comparison: 'Chieftain'

Summary: The lightsprout of ‘Red Carré' is medium in size and globose with long lateral shoots while that of ‘Chieftain' is small and conic with short lateral shoots. The base of the lightsprout of ‘Red Carré' has very sparse to sparse pubescence while that of ‘Chieftain' has medium to dense pubescence. The apex of the lightsprout of ‘Red Carré' has an intermediate habit and a medium to strong intensity of anthocyanin colouration while that of ‘Chieftain' has a closed habit and a weak to medium intensity of anthocyanin colouration. The plants of ‘Red Carré' have many inflorescences and mature late in the season while those of ‘Chieftain' have few to a medium number of inflorescences and mature mid-season. The peduncle of ‘Red Carré' has a medium extent of anthocyanin colouration while that of ‘Chieftain' has an absent or very low to low extent of anthocyanin colouration. The corolla of ‘Red Carré' has a high extent of medium to strong intensity anthocyanin colouration while that of ‘Chieftain' has a low extent of weak to medium intensity of anthocyanin colouration. The tuber of ‘Red Carré' has a long-oval form and very shallow depth of eyes while that of ‘Chieftain' has a short-oval form and shallow depth of eyes.

Description:

LIGHTSPROUT: medium size, few root tips, long lateral shoots
LIGHTSPROUT BASE: globose, very strong intensity of anthocyanin colouration, high proportion of blue in anthocyanin colouration, very sparse to sparse pubescence density
LIGHTSPROUT APEX: medium size in relation to base, intermediate habit, medium to strong intensity of anthocyanin colouration, weak to medium pubescence

PLANT: foliage structure is intermediate type where foliage is half open and stems are partly visible, upright growth habit, many to very many inflorescences, matures late season

STEM: weak intensity of anthocyanin colouration

LEAF: few to medium number of secondary leaflets, medium green upper side, absent or very weak intensity of anthocyanin colouration on upper side of midrib
SECOND PAIR OF LATERAL LEAFLETS: narrow to medium width in relation to length
TERMINAL AND LATERAL LEAFLETS: absent or very low frequency of coalescence

PEDUNCLE: medium extent of anthocyanin colouration
INFLORESCENCE: medium size
FLOWER BUD: strong intensity of anthocyanin colouration
COROLLA: medium diameter
COROLLA (INNER SIDE): high extent of anthocyanin colouration, medium to strong intensity of anthocyanin colouration, medium proportion of blue in anthocyanin colouration

TUBER: long-oval, red flesh
TUBER EYE: very shallow, red at base
TUBER SKIN: yellowish white

Origin & Breeding History: 'Red Carré' (experimental designation AG 1540) originated from the cross between ‘Chieftain' and 'Patagonia', conducted at the Progest 2001 Inc, breeding station in Sainte-Croix, Quebec, Canada in 2014. One of the resulting progeny was designated AG 1540 in 2018 based on tuber shape, skin colour, and the overall appearance.

Tests & Trials: The comparative trial for 'Red Carré' was conducted in Sainte-Croix, Quebec during the 2024 growing season. The field trial consisted of 4 replicates with plots arranged in a RCB design. Each plot was a 5-metre-long hilled row containing 25 plants spaced 20 cm apart. Rows were spaced 0.915 metres apart. Lightsprout characteristics were assessed on 10 tubers harvested from the comparative trial and observed approximately 2.5 to 3 months after storage at 4 degrees.

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Potato: Reference variety ‘Chieftain' (left) with ‘Red Carré' (right)