Summary
Thirty, one-season-old Rosa canina ‘Inermis’ seedlings (8–12 mm in diameter) were grown in the greenhouse. After 5 months, single-node softwood cuttings were made of each plant. Analysis of variance demonstrated marked differences between the internode length, number of leaflets per leaf and the leaf area of the original seedling, and between the time of axillary bud-break, axillary sprout length and weight of adventitious roots of their 23-day-old cuttings. Clonal root weight of cuttings was highly significantly correlated with: number of leaflets per leaf (r=−0.65), leaf area (r=+0.65), and days to axillary bud-break (r=+0.62). The origin of heterogeneity among ‘Inermis’ seedling rootstocks, its probable effect on the flower production of cut roses and its possible use in the selection for clonal rootstocks are discussed.
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De Vries, D.P., Dubois, L.A.M. Variation for plant characters and for performance of softwood cuttings of Rosa canina ‘Inermis’ seedlings. Euphytica 36, 407–412 (1987). https://doi.org/10.1007/BF00041483
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DOI: https://doi.org/10.1007/BF00041483