Go to National Library of New Zealand Te Puna Mātauranga o Aotearoa
Volume 88, 1960-61
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Colour Variation in Acaena anserinifolia

The majority of plants of Acaena anserinifolia observed had red and purple pigments in addition to chlorophyll. At a number of localities there were a few uniformly bright-green plants which lacked the secondary pigments. These plants bred true for this character Some of the plants possessing secondary pigments bred true, but in others a proportion of the offspring had secondary pigments, while in a lesser proportion these pigments were lacking. Figures for the latter phenomenon in the various localities were as follows:—

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Secondary Pigments Present Secondary Pigments Absent
Lyall Bay-Seatoun 84 26
South Karori Stream 84 29
South Karori Stream 39 9
Wamui Valley 34 17
Kapiti Island 45 26
Southern Tararuas 49 17
Totals 335 124
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The overall ratio of progeny with secondary pigments to progeny lacking secondary pigments is 2.7: 1. It seems, therefore, that the production of secondary pigments is controlled by a single genetic factor whose recessive allele is inhibiting when homogygous.

These occasinal plants lacking secondary pigments are probably the form described by Cockayne as Acaena anserinifolia var. viridior (Cockayne, 1916).