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Selection criteria in cloudberry Eivind Uleberg, Inger Martinussen, Gunnlaug Røthe

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

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Materials and methods Clones planted on peat in open outdoor benches – 0.8 m 2 squares – 16 plants per square – Established 2003 Observations – Number of flowers – Number of berries – Fresh weight of berries

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Clone material NumberOriginSexLatitudeAltitude 002EnglandFemale54º30’. 102Aust AgderFemale58º30’50 104Aust AgderFemale58º30’ Aust AgderMale58º30’ Aust AgderFemale58º30’ HedmarkFemale62º30’50 206HedmarkFemale62º30’ HedmarkFemale62º30’ NordlandFemale66º30’ NordlandFemale66º30’ FinnmarkFemale70º30’ SvalbardFemale78º38’80

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Number of flowers

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Number of berries

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Number of flowers per berry Clone Totally 0022,261,162,722, ,882,072,562, ,6332,1141,2924, ,0063,25389,00112, ,521,572,732, ,371,393,612, ,052,683,022, ,931,692,382, ,481,301,981, ,5427,1173,3326, ,292,033,122,90

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Mean berry weights

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Mean berry weights as affected by harvesting time

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Antioxidant content of different genotypes

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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

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Thank you for your attention!

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