Marilyn

Potato

Variety Description

Variety used for comparison: 'Annabelle'

Summary: The lightsprout of 'Marilyn' has a spherical shape while it is ovoid in 'Annabelle'. The lightsprout base of 'Marilyn' has strong intensity of anthocyanin colouration and dense pubescence while the lightsprout base of 'Annabelle' has medium intensity of anthocyanin and medium pubescence. The tip of the lightsprout of 'Marilyn' has medium intensity of anthocyanin colouration and medium pubescence while the tip of the lightsprout of 'Annabelle' has weak intensity of anthocyanin and dense pubescence. 'Marilyn' has a low extent of anthocyanin colouration at the base of the stem while 'Annabelle' has a medium extent along the whole stem. The leaf of 'Marilyn' has a large outline with a closed to intermediate openness and medium green colour while the leaf of 'Annabelle' is medium sized and open with a light green colour. 'Marilyn' has a medium to strong presence of secondary leaflets while it is weak in 'Annabelle'. The frequency of coalescence of the terminal and lateral leaflets in 'Marilyn' is absent or very low while it is high in 'Annabelle'. 'Marilyn' has a taller plant height than 'Annabelle'. The corolla of 'Marilyn' is small while it is medium sized in 'Annabelle'. 'Marilyn' has a tuber with medium depth eyes while they are shallow on the tuber of 'Annabelle'.

Description:

PLANT: intermediate to leaf type foliage structure, semi-upright growth habit, medium maturity

STEM: low extent of anthocyanin colouration at base only

LEAVES: large outline, closed to intermediate openness, medium to strong presence of secondary leaflets, medium green, absent or very low extent and absent or very weak intensity of anthocyanin colouration on the midrib of the upper side, absent or very low frequency of coalescence of terminal and lateral leaflets
SECOND PAIR OF LATERAL LEAFLETS: medium to large size, narrower than long width in relation to length
LEAFLET: very weak to weak waviness of margin, medium depth veins, medium glossiness on upper side, no pubescence on blade at apical rosette

INFLORESCENCE: low frequency per plant, small, absent or very low extent of anthocyanin colouration on peduncle
FLOWER BUD: low extent of anthocyanin colouration
COROLLA: small, absent or very low extent of anthocyanin colouration on the inner side, anthocyanin absent to very weak in intensity with absent or low proportion of blue

TUBER: long, medium yellow flesh
TUBER EYES: medium depth
TUBER SKIN: yellow, yellow at base of eye, absent or very weak anthocyanin colouration in reaction to light

LIGHTSPROUT: medium size, spherical, root tips few in number, short lateral shoots
LIGHTSPROUT BASE: strong intensity of anthocyanin colouration, low to medium proportion of blue in the anthocyanin colouration, dense pubescence
LIGHTSPROUT TIP: medium size in relation to base, intermediate habit, medium intensity of anthocyanin colouration, medium pubescence

Origin & Breeding History: The origin of 'Marilyn' is the result of the cross made in 1995 between 'Nicola' and 'Pomfine' at HZPC Research, Metslawier, The Netherlands. The selection criteria included yield, internal and external tuber quality and resistances against different diseases and pests.

Tests & Trials: Tests and trials were conducted during the 2011 growing season in Drummond, New Brunswick. Plots consisted of 60 plants grown in a single row with a row length of 18.5 meters and a row spacing of 0.9 meters.

Comparison table for 'Marilyn' with reference variety 'Annabelle'

Plant height (cm)

Click on image for larger view

Potato: 'Marilyn' (left) with reference variety 'Annabelle' (right)