|Previously Proposed Denomination:||'PR07-11-1'|
|Botanical Name:||Solanum tuberosum|
Privar Farm Inc.
909 Eliot River Road
North Wiltshire, Prince Edward Island
Joyce & Robert Coffin, Privar Farm Inc., North Wiltshire, Prince Edward Island
Variety used for comparison: 'Palisade Russet'
Summary: The lightsprout of 'Riverdale Russet' is medium sized whereas the lightsprout of 'Palisade Russet' is small. The base of the lightsprout of 'Riverdale Russet' has a medium to strong intensity of anthocyanin colouration whereas the base of the lightsprout of 'Palisade Russet' has a weak intensity of anthocyanin colouration. The plants of 'Riverdale Russet' are taller than the plants of 'Palisade Russet'. The frequency of coalescence of the terminal and lateral leaflet of 'Riverdale Russet' is medium whereas the frequency of coalescence of the terminal and lateral leaflet of 'Palisade Russet' is absent or very low.
LIGHTSPROUT: medium size, ovoid shape, medium number of root tips, short lateral shoots
LIGHTSPROUT BASE: medium to strong intensity of anthocyanin colouration, absent or low to medium proportion of blue in anthocyanin colouration, medium to dense pubescence
LIGHTSPROUT TIP: medium size in relation to base, intermediate between closed and open habit, 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, matures mid-season
STEM: absent or very low extent of anthocyanin colouration
LEAF: medium to large outline, openness is intermediate to open, medium to dark 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, medium 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, shallow to medium depth of veins, medium to glossy upper side, glabrous blade at apical rosette
INFLORESCENCE: medium frequency per plant, small to medium size
PEDUNCLE: low extent of anthocyanin colouration
FLOWER BUD: 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, white flesh
TUBER EYE: shallow, yellow at base
TUBER SKIN: reddish brown
Origin & Breeding History: Riverdale Russet' (experimental designation 'PRR07-11-1') originated from a cross between 'Lemhi Russet' and 'Century Russet' conducted in 1991 on Prince Edward Island, Canada between. 'Riverdale Russet' was selected in 2007 for its positive agronomic characteristics.
Tests & Trials: The comparative trial for 'Riverdale Russet' 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 'Riverdale Russet' with reference variety 'Palisade Russet'
|'Riverdale Russet'||'Palisade Russet'|
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