Abstract
Between 1986 and 1989 we studied the influence of γ-irradiation (2.5–80 Gy) on growth processes and the content of arbutin glycoside. Bearberry [Arctostaphylos uva-ursi (L.) Sprengel] shows polycyclic characteristics of growth; the vegetation period is divided by summer dormancy (June) into periods of spring and summer growth. As plants age the summer dormancy gets longer and the period of summer growth is shorter. Irradiation with a dose of 80 Gy was lethal and a dose of 60 Gy damaged plants so much that they were not able to grow in the first spring after irradiation. Significant growth stimulation (both in the height of plants and in branching) was shown only in the second year after irradiation (2.5–60 Gy). In the fourth year the growth in all irradiated variants was weaker than in the control. Doses of 2.5 and 5 Gy did not influence the content of arbutin significantly; higher doses of irradiation changed the dynamics of production and decomposition which is connected with growth changes.
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Communicated by T. GICHNER
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Sovová, M., Opatrná, J. & Jahodář, L. The effect of gamma irradiation on growth characteristics and arbutin content of bearberry (Arctostaphylos uva-ursi, cv. arbuta). Biol Plant 36, 221–228 (1994). https://doi.org/10.1007/BF02921090
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DOI: https://doi.org/10.1007/BF02921090