Abstract
The purpose of this study was to establish conditions for micropropagation of cloudberry (Rubus chamaemorus L.). Cultures were initiated from meristem cultures. When cultures were subcultured from clusters of 3–5 shoots, approximately 70 and 50 shoots were produced per cluster within 6 weeks at 8.9 µM BAP for the female cv. Fjellgull and the male cv. Apollen, respectively. Addition of 5.5 µM GA3 reduced the number of shoots. Auxins (IBA, NAA) promoted root development in vitro, but inhibited formation of new shoots. However, as much as 85% of shoots rooted without auxin treatment when planted in a peat:sand (80:20 v/v) mixture. Some of the male plants regenerated from shoot tip cultures flowered in the greenhouse within a year after transfer to soil.
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