Alexandra

Potato

Variety Description

Variety used for comparison: 'Belana'

Summary: The base of the lightsprout of 'Alexandra' has weak intensity of anthocyanin colouration whereas the base of the lightsprout of 'Belana' has strong intensity of anthocyanin colouration. The tip of the lightsprout of 'Alexandra' has absent or very weak intensity of anthocyanin colouration whereas the tip of the lightsprout of 'Belana' has medium intensity of the anthocyanin colouration. The plants of 'Alexandra' are taller than the plants of 'Belana'. The extent of anthocyanin colouration on the stem is absent or very low for 'Alexandra' whereas the extent of anthocyanin colouration on the stem is low for 'Belana'. The outline size of the leaf of 'Alexandra' is large whereas the outline size of the leaf of 'Belana' is medium size.

Description:

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

PLANT: foliage structure is leaf type where foliage is closed and stems are not or hardly visible, semi-upright growth habit, late maturity

STEM: absent or very low extent of anthocyanin colouration

LEAF: large outline, intermediate between closed and open, light to medium green on upper side, absent or very low extent and absent or very weak intensity of anthocyanin colouration of upper side of midrib, weak presence of secondary leaflets, low frequency of coalescence of terminal and lateral leaflets
SECOND PAIR OF LATERAL LEAFLETS: leaflet is large and narrower than long
LEAFLET: weak waviness of margin, medium depth of veins, dull upper side, glabrous blade at apical rosette

INFLORESCENCE: low frequency per plant, small to medium size
PEDUNCLE: absent or very low extent of anthocyanin colouration
FLOWER BUD: absent or very low extent of anthocyanin colouration
COROLLA: medium size
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: long oval shape, medium to dark yellow flesh
TUBER EYE: shallow, yellow at base
TUBER SKIN: yellow, develops absent or very weak to weak intensity of anthocyanin colouration in reaction to light

Origin & Breeding History: 'Alexandra' originated from a cross conducted in 1999 between '165/22/65 B' and 'P 92/388', in Böhlendorf, Germany. 'Alexandra' was selected in 2000 for its positive agronomic characteristics.

Tests & Trials: The comparative trial for 'Alexandra' was conducted by Global Agri Services Inc. during the growing season of 2016 in Drummond, New Brunswick. The trial consisted of a single, 19.5 metre long row containing 65 plants spaced 0.3 metres apart for each variety. The distance between rows within the trial was 0.9 metres. Observations and measurements were taken from 10 plants, or 10 parts of plants, of each variety. Mean differences were significant at the 5% probability level based on a paired Student's t-test.

Comparison table for 'Alexandra' with reference variety 'Belana'

Plant height

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Potato: 'Alexandra' (left) with reference variety 'Belana' (right)