Lady Ada

Potato

Variety Description

Variety used for comparison: 'Lady Claire'

Summary: The base of the lightsprout of ‘Lady Ada' is ovoid with very sparse to sparse pubescence while that of ‘Lady Claire' is globose with a medium density of pubescence. The plants of ‘Lady Ada' have a semi-upright growth habit while those of ‘Lady Claire' have a spreading growth habit. The plants of ‘Lady Ada' are shorter than those of ‘Lady Claire'. The plants of ‘Lady Ada' mature late in the season while those of ‘Lady Claire' mature mid-season. The tuber of ‘Lady Ada' has medium yellow flesh while that of ‘Lady Claire' has light yellow flesh.

Description:

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

PLANT: foliage structure is intermediate type where foliage is half open and stems are partly visible, semi-upright growth habit, few to a medium number of inflorescences, matures late in the season

STEM: absent or very low extent of anthocyanin colouration

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

INFLORESCENCE: small
PEDUNCLE: absent or very low extent of anthocyanin colouration
FLOWER BUD: weak intensity of anthocyanin colouration
COROLLA: medium size diameter
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: short oval, medium yellow flesh
TUBER EYE: shallow, yellow at base
TUBER SKIN: light yellow brown, medium texture

Origin & Breeding History: 'Lady Ada' (experimental designation CMK2009-630-001) originated from the cross between the variety ‘Pirol', as the female parent and breeding line CMK2003-707-003, as the male parent, conducted at the C. Meijer breeding station in Rilland, the Netherlands in 2008. The new variety was designated CMK2009-630-001 in 2011 based on negative mass selection for agronomic characteristics including yield, time of maturity, dry matter, tuber size and shape as well as disease resistances.

Tests & Trials: The comparative trial for 'Lady Ada' was conducted by Global Agri Services Inc. in Central Blissville, New Brunswick during the 2025 growing season. The field trial consisted of a single 16-metre-long row for each variety, with rows spaced 1.1 metres apart. Each row contained 70 plants spaced 0.23 metres apart. Measurements were taken from 10 plants, or 10 parts of plants, of each variety. The mean differences were significant at the 5% confidence probability level based on a paired Student's t-test. Lightsprout characteristics were assessed on 10 tubers harvested from the comparative trial and observed approximately 2.5 to 3 months after sprouting was promoted by exposing the tubers to an external agent.

Comparison table for 'Lady Ada' with reference variety 'Lady Claire'

Plant height (cm)

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Potato: ‘Lady Ada' (left) with reference variety ‘Lady Claire' (right)