Mirton Pearl

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Leaf Flowers Plant
Sprout tuber Sliced tuber

General

  • Origin & Breeding: bred by Agriculture Canada (MIRA x F5318) and selected at the St. John's West Research Station, Newfoundland, in 1966.
  • Year registered in Canada: 1975.
  • Registration number: 1606.
  • Maturity: early to mid-season.

Botanical Features

  • Plants: medium-sized, upright to spreading; nodes slightly swollen; wings not prominent.
  • Leaves: close, smooth.
    Terminal leaflets: symmetrical.
    Primary leaflets: slightly asymmetrical, three pairs.
    Secondary leaflets: large, two to three pairs.
    Tertiary leaflets: numerous.
  • Flowers: numerous, white, on slightly bronzed green buds.
  • Tubers: round, uniform, smooth white skin; evenly distributed medium-deep eyes, occasionally very deep at the bud end; white flesh.
  • Sprouts: reddish purple, non-pubescent.

Agricultural Features

High yielding, some resistance to damage from mechanical harvesting. Low total glycoalkaloids and high total solids. Good storability.

Remarks: space 18 to 20 cm in the row to avoid oversize tubers.  This variety has very high yield performance in Atlantic Canada.

  • Utilization: good for boiling and baking.
  • Chief Market: fresh market

Reaction to Diseases

Resistant: potato wart (pathotypes 2 and 8)
Moderately resistant: common scab, fusarium dry rot, late blight.
Susceptible: black leg, powdery scab, potato cyst nematode.

References: 1, 6.

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