Gwenne

Potato

Variety Description

Variety used for comparison: 'Europrima'

Summary: The lightsprout base has a medium intensity of anthocyanin colouration for 'Gwenne' whereas the intensity is strong for 'Europrima'. The lightsprout tip has an intermediate habit for 'Gwenne' whereas it has a closed habit for 'Europrima'. 'Gwenne' has an absent or very low frequency of coalescence of the terminal and lateral leaflets whereas it is low in 'Europrima'. The leaflet blade at the apical rosette is pubescent for 'Gwenne' whereas it is glabrous in 'Europrima'. 'Gwenne' has a shorter plant height than that of 'Europrima'. 'Gwenne' has medium sized inflorescences whereas those of 'Europrima' are small. The plants of 'Gwenne' mature mid to late season whereas plants of 'Europrima' mature early. The tubers of 'Gwenne' have a long oval to long shape with shallow eyes whereas the tubers of 'Europrima' are short oval in shape with eyes at a medium depth. The tubers of 'Gwenne' have a light yellow flesh whereas those of 'Europrima' have a medium yellow flesh.

Description:

LIGHTSPROUT: medium size, ovoid, root tips few in numbers, short lateral shoots
LIGHTSPROUT BASE: medium intensity of anthocyanin colouration, medium proportion of blue in the anthocyanin colouration, sparse to medium pubescence
LIGHTSPROUT TIP: medium size in relation to base, intermediate habit, weak intensity of anthocyanin colouration, medium pubescence

PLANT: foliage structure is an intermediate type where foliage is half open and stems are partly visible, upright growth habit, medium to late maturity

STEM: no anthocyanin colouration

LEAF: medium outline, intermediate openness, medium green colour, absent or very low extent and absent or very weak intensity of anthocyanin colouration on the midrib of the upper side
SECOND PAIR OF LATERAL LEAFLETS: medium to large, ranges from narrower than long to as broad as long width in relation to length
LEAFLETS: medium presence of secondary leaflets, absent or very low frequency of coalescence of terminal and lateral leaflets, weak waviness of margin, medium depth of veins, dull on upper side, pubescence on blade at apical rosette

INFLORESCENCE: medium frequency per plant, medium size, absent or very low extent of anthocyanin colouration on peduncle
FLOWER BUD: absent or very low extent of anthocyanin colouration
COROLLA: medium to large, absent or very low extent and absent or very weak intensity of anthocyanin colouration on the inner side, absent or low proportion of blue in the anthocyanin colouration

TUBER: long-oval to long shape, medium yellow flesh
TUBER EYE: shallow depth, yellow at base
TUBER SKIN: yellow, weak to medium anthocyanin colouration in reaction to light

Origin & Breeding History: The variety 'Gwenne' originated from a cross between 'INRA94T97.43' as the female parent and 'G93TT296006 'as the male parent, made at Châteauneuf-du-Faou, France in 2001. Seed of the cross was sown, transplanted into 9 cm pots and grown in the greenhouse during the spring of 2002. One tuber was harvested and planted in the field in 2003. Four tubers were harvested and in 2004 four hill plots were planted from which 30 tubers were harvested. In 2005, 18 seed tubers were planted in the field for seed production and 8 tubers were used for testing. From 2006 to 2008, testing was conducted in France, Germany and the United Kingdom. Further evaluations were conducted in Cyprus, Israel, Italy and Egypt in 2009 and 2010. Criteria used in the selection process included pest resistance, yield, cooking and frying quality, dry matter content, storability and visual impression.

Tests & Trials: Trials for 'Gwenne' were conducted during the 2013 growing season in Drummond, New Brunswick. Each variety plot consisted of 60 plants grown in a single row with a row length of 18.5 metres and a row spacing of 0.9 metres between rows. Plants were spaced 0.30 metres apart. The measured characteristics were based on 10 measurements per variety. Mean differences were significant at the 5% probability level based on a paired Student's t-test.

Comparison table for 'Gwenne' with reference variety 'Europrima'

Plant height (cm)

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Potato: 'Gwenne' (left) with reference variety 'Europrima' (right)