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Denomination: 'Fioretta'
Botanical Name: Solanum tuberosum
Applicant/Holder: Norika Nordring Kartoffelzucht und Vermehrungs GmbH
Parkweg 4
D-18190, Sanitz
Gross Lüsewitz
Breeder: Frank Lange, Saatzucht Fritz Lange KG, Germany
Agent in Canada: Global Agri Services Inc.
376 New Maryland Highway
New Maryland, New Brunswick
E3C 1E5
Tel: 506-462-9493
Application Date: 2012-04-02
Application Number: 12-7581
Grant of Rights Date: 2017-02-23
Certificate Number: 5432
Date rights surrendered: 2021-02-18

Variety Description

Variety used for comparison: 'Yukon Gold'

Summary: The lightsprout of 'Fioretta' is large with an intermediate to open tip whereas the lightsprout of 'Yukon Gold' is of medium size with a closed tip. The lateral shoots of the lightsprout of 'Fioretta' are of medium length whereas the lateral shoots of 'Yukon Gold' are short. The plants of 'Fioretta' have a semi-upright growth habit whereas the plants of 'Yukon Gold' have an upright growth habit. The openness of the leaf of 'Fioretta' is intermediate between closed and open whereas the leaf of 'Yukon Gold' is open. The extent of anthocyanin colouration of the upper side of the leaf midrib of 'Fioretta' is medium whereas the extent is absent or very low for 'Yukon Gold'. The extent of anthocyanin colouration of the inner side of the corolla of 'Fioretta' is medium whereas the extent is high for 'Yukon Gold'. In reaction to light, the tuber skin of 'Fioretta' develops a medium intensity of anthocyanin colouration whereas the tuber skin of 'Yukon Gold' develops an absent or very weak intensity of anthocyanin colouration.


LIGHTSPROUT: large, ovoid shape, few root tips, medium length of lateral shoots
LIGHTSPROUT BASE: medium to strong intensity of anthocyanin colouration, absent or low proportion of blue in anthocyanin colouration, dense pubescence
LIGHTSPROUT TIP: small in relation to base, intermediate to open habit, weak intensity of anthocyanin colouration, medium to dense pubescence

PLANT: foliage structure is intermediate type where foliage is half open and stems are partly visible, semi-upright growth habit, mid-season maturity

STEM: low to medium extent of anthocyanin colouration along entire length

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

INFLORESCENCE: high frequency per plant, medium size
PEDUNCLE: medium extent of anthocyanin colouration
FLOWER BUD: low extent of anthocyanin colouration
COROLLA: medium size
COROLLA (INNER SIDE): medium extent of anthocyanin colouration, medium intensity of anthocyanin colouration, absent or low proportion of blue in anthocyanin colouration

TUBER: short oval to oval shape, light to medium yellow flesh
TUBER EYE: shallow to medium depth, yellow at base
TUBER SKIN: yellow, develops medium intensity of anthocyanin colouration in reaction to light

Origin & Breeding History: 'Fioretta' originated from a hybridization between the selection designated '458/83' and the variety 'Leyla' conducted in Bad Schwartau, Germany, in 1994. It was derived from phenotypic recurrent selection that was used during its development. For 11 years, an intensive evaluation process was conducted using public and industry trials throughout Europe to identify the variety. 'Fioretta' was selected in 1995 for its maturity time, yield, disease resistance, processing traits, morphological traits, and storage characteristics.

Tests & Trials: The comparative trial for 'Fioretta' was conducted during the growing season of 2015 in Drummond, New Brunswick. The trial consisted of a single, 18.5 metre long row containing 60 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.

Click on image for larger view
Potato: 'Fioretta' (left) with reference variety 'Yukon Gold' (right)

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