Abstract:This paper presents phenological development of seven introduced species of the genus Crataegus L. in the Kola North. The studied hawthorn species are characterized by early onset of vegetation, short duration of linear growth of shoots and a short vegetation period. Timely completion of growth processes and lignification of shoots contribute to successful adaptation of Crataegus plants under the conditions of introduction. The authors study morphometric parameters of flowers and inflorescences, decorative qua… Show more
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