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Optimizing Cloudberry Clone Selection Criteria for Improved Cultivation

This study by Eivind Uleberg, Inger Martinussen, and Gunnlaug Røthe at Bioforsk Holt evaluates selection criteria for cloudberry clones, including pistil/stamen count, flower and shoot numbers, released cultivars, and more. The research was conducted on outdoor benches with specific planting and observation parameters to assess flower quantity, berry production, fresh berry weight, and antioxidant content across different genotypes. The study concludes that further evaluations are necessary to determine future selection criteria, considering genetic and environmental variances, heritability estimates, genotype-environment interactions, and potential berry content inclusion.

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Optimizing Cloudberry Clone Selection Criteria for Improved Cultivation

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  1. Selection criteria in cloudberryEivind Uleberg, Inger Martinussen, Gunnlaug Røthe

  2. Clone evaluations at Bioforsk Holt • Selection criteria • Number of pistils or stamens per flower • Number of flowers • Number of shoots per m2 • Released cultivars • Two female; ‘Fjellgull’ and ‘Fjordgull’ • Two male; ‘Apollen’ and ‘Apolto’

  3. Materials and methods • Clones planted on peat in open outdoor benches • 0.8 m2 squares • 16 plants per square • Established 2003 • Observations • Number of flowers • Number of berries • Fresh weight of berries

  4. Clone material

  5. Number of flowers

  6. Number of berries

  7. Number of flowers per berry

  8. Mean berry weights

  9. Mean berry weights as affected by harvesting time

  10. Antioxidant content of different genotypes

  11. Conclusions • Further evaluations needed before deciding future selection criteria • Genetic and environmental variance • Heritability estimates • Genotype by environment interactions? • Berry contents will most likely be included as new selection criteria

  12. Thank you for your attention!

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