Yarrow

Potato

Variety Description

Variety used for comparison: 'Smart'

Summary: The lightsprout of ‘Yarrow' is small while that of ‘Smart' is medium in size. The base of the lightsprout of ‘Yarrow' has absent or very sparse pubescence while that of ‘Smart' has a sparse to medium density of pubescence. The apex of the lightsprout of ‘Yarrow' has an absent or very weak intensity of anthocyanin colouration while that of ‘Smart' has a strong to very strong intensity of anthocyanin colouration. The plants of ‘Yarrow' have an upright to semi-upright growth habit and many to very many inflorescences while those of ‘Smart' haves a spreading growth habit and absent or very few inflorescences. The stem of ‘Yarrow' has an absent or very low extent of anthocyanin colouration while that of ‘Smart' has a medium extent of anthocyanin colouration. The leaf of ‘Yarrow' is large while that of ‘Smart' is medium in size.

Description:

LIGHTSPROUT: small, medium number of root tips, short lateral shoots
LIGHTSPROUT BASE: ovoid, strong to very strong intensity of anthocyanin colouration, medium proportion of blue in anthocyanin colouration, absent or very sparse pubescence
LIGHTSPROUT APEX: small to medium size in relation to base, closed habit, absent or very weak intensity of anthocyanin colouration, absent or very sparse pubescence

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

STEM: absent or very low extent of anthocyanin colouration

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

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

Origin & Breeding History: 'Yarrow' (experimental designation TT-09-032/2010-01) originated from the cross between TT12-6 as the female parent and Des/S-44 as the male parent, conducted at the Tuberosum Technologies Inc. breeding station in Broderick, Saskatchewan, Canada in 2009. One of the resulting progeny was designated TT-09-032/2010-01 in 2010 based on negative mass selection for agronomic characteristics and disease resistance.

Tests & Trials: The comparative trial for 'Yarrow' was conducted by Global Agri Services Inc. in Central Blissville, New Brunswick during the 2024 growing season. The field trial consisted of a single 14.86 metre long row, per variety. Rows were spaced 1.1 metres apart with each row containing 65 plants spaced 0.23 metres apart. Measurements were taken from 10 plants, or 10 parts of plants, of each variety. 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.

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Potato: ‘Yarrow' (left) with reference variety ‘Smart' (right)