AC Ptarmigan

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GENERAL

• Origin & Breeding: bred from the cross (F59103 x ND5281-8) made in 1972 at the Agriculture Canada Research Station in Fredericton, New Brunswick and selected by the Prairie Potato Breeding Project, Agriculture Canada, Lethbridge, Alberta.
• Year registered in Canada: 1992
• Registration number: 3654
• Maturity: early

BOTANICAL FEATURES

• Plants: medium size, semi-erect; stems pigmented; wings prominent, waved to straight single; nodes very weakly pigmented and slightly swollen.
• Leaves: dark green; open; midribs and petioles pubescent, not pigmented.
  Terminal leaflets: medium ovate; tip acuminate; base truncate and asymmetrical; slightly wavy margins.
  Primary leaflets: three to four pairs; medium ovate; tip acuminate; base truncate and asymmetrical.
• Flowers: white corolla, medium size; orange anthers; buds strongly pigmented, drop easily; peduncle medium green.
• Tubers: oval; smooth buff skin; shallow eyes, eyebrows not prominent; cream coloured flesh.
• Sprouts: conical; purple; base strongly pigmented and moderately pubescent; apex open, strongly pigmented and strongly pubescent.

AGRICULTURAL FEATURES

High yielding variety of attractive appearance; very uniform tuber size and shape; early tuber set; medium number of tubers per plant; medium specific gravity.

• Utilization: mealy texture; low boiling sloughing; good for baking; very good for boiling; excellent for early season chipping.
• Chief Markets: early fresh market and early processing into chips.

REACTION TO DISEASES

Moderately resistant: early blight, common scab, PVY.
Susceptible: late blight, PVS.

References: 1, 6.

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