Yellow Star

Potato

Denomination: 'Yellow Star'
Previously Proposed Denomination: 'KN 04-01-01'
Botanical Name: Solanum tuberosum
Applicant/Holder: Könst Research B.V.
Hoofdweg 1060
2153LN
Nieuw Vennep
Netherlands
Breeder: Könst Research B.V., Nieuw Vennep, Netherlands
Agent in Canada: Parkland Seed Potatoes Ltd.
2908 Ellwood Drive, South West
Edmonton, Alberta
T6X 0A9
Canada
Tel: 780-435-3122
Application Date: 2011-01-18
Application Number: 11-7153
Grant of Rights Date: 2013-02-20
Certificate Number: 4464
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2015-02-20
Grant of Rights Termination Date: 2031-02-20

Note: The applicant has requested an exemption from compulsory licensing to allow time to multiply and distribute propagating material of the variety. If the exemption is granted, it may be allowed for two years from the date rights are granted for the variety.


Variety Description

Variety used for comparison: 'Yukon Gold'

Summary: The lightsprout base of 'Yellow Star' has medium pubescence and a medium proportion of blue in the anthocyanin colouration while the lightsprout base of 'Yukon Gold' has dense pubescence and an absent or low proportion of blue in the anthocyanin colouration. The lightsprout tip of 'Yellow Star' has an absent or very weak intensity of anthocyanin colouration and medium pubescence while the lightsprout tip of 'Yukon Gold' has a medium intensity of anthocyanin colouration and sparse pubescence. The extent of anthocyanin colouration in the stem of 'Yellow Star' is absent to very low while it is low to medium in 'Yukon Gold'. 'Yellow Star' has a shorter plant height than 'Yukon Gold'. The extent of anthocyanin colouration on the flower bud of 'Yellow Star' is absent to very low while it is medium to high in 'Yukon Gold'. 'Yellow Star' has a corolla with an absent or very weak intensity of anthocyanin colouration while it is weak to medium in 'Yukon Gold'. The extent of anthocyanin colouration on the inner side of the corolla of 'Yellow Star' is absent or very low while it is high in 'Yukon Gold'. 'Yellow Star' has a yellow colour at the base of the eye of the tuber while it is red in 'Yukon Gold'.

Description:

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

STEM: absent or very low extent of anthocyanin colouration

LEAVES: medium sized outline, intermediate openness, medium 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 size, narrower than long width in relation to length
LEAFLET: weak waviness of margin, medium depth veins, medium glossiness of upper side, no pubescence on blade at apical rosette

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

TUBER: oval to long oval, medium yellow flesh
TUBER EYES: medium depth
TUBER SKIN: yellow, yellow at base of eye, strong anthocyanin colouration in reaction to light

LIGHTSPROUT: medium size, spherical, root tips few in numbers, short lateral shoots
LIGHTSPROUT BASE: medium intensity of anthocyanin colouration, medium proportion of blue in the anthocyanin colouration, medium pubescence
LIGHTSPROUT TIP: large size in relation to base, closed habit, absent to weak intensity of anthocyanin colouration, medium pubescence

Origin & Breeding History: The origin of 'Yellow Star' (experimental designation KN 04-01-01) is the result of a cross made in 2001 between 'Fianna' and 'Yukon Gold' at Northern Konstar Seedpotatoes Ltd., Outlook, Saskatchewan. Selection criteria included high tuber count, good tuber shape and uniformity, good size and early maturity.

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 'Yellow Star' with reference variety 'Yukon Gold'

Plant height (cm)

  'Yellow Star' 'Yukon Gold'
mean 55.3 62.8
std. deviation 3.6 1.8

Click on image for larger view
Yellow Star
Potato: 'Yellow Star' (MK04-01-01) (left) with reference variety 'Yukon Gold' (right)