Invasive Species Compendium

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Abstract

Domestication of Estonian natural arctic bramble.

Abstract

The potential of arctic bramble (Rubus arcticus) as a fruit crop was investigated in experiments initiated in 1995 at Tartu, Estonia. In the first 2 experimental years, plants of a natural Estonian R. arcticus clone from Kaansoo attained a significantly greater mean height than those of the varieties Pima and Mespi. Mespi showed the greatest shoot-forming ability in the first year, but the clone from Kaansoo produced significantly more shoots in the second year and produced the most side shoots in both years of the study. The clone from Kaansoo produced a significantly higher total yield than the other 2 varieties in 1996, but Mespi produced a significantly higher total yield in 1997. However, the yield in 1997 was influenced considerably by the occurrence of mildew (Peronospora rubi), which caused reddish angular on leaves and drying up of shoots, flowers and fruits. It is concluded that R. arcticus has the potential for commercial cultivation as a fruit crop in Estonia.