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The production, propagation and distribution of virus-free clones of Narcissus tazetta cv. Grand Soleil d'Or

, : The production, propagation and distribution of virus-free clones of Narcissus tazetta cv. Grand Soleil d'Or. Acta Horticulturae (47): 77-81

Five viruses have been isolated from the Grand Soleil d'Or: tomato black ring, strawberry latent ringspot, arabis mosaic, cucumber mosaic and narcissus degeneration viruses. No virus-free plants were found in cultivation. Plants infected with arabis mosaic and narcissus degeneration viruses were freed from virus by meristem-tip culture. Virus-free bulbs grew more vigorously than infected ones and gave more and larger flowers with a better colour.

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