Червоноквіткова яблуня в колекції Національного університету біоресурсів і природокористування України

Abstract

Apple trees with red flowers are especially attractive during the flowering period, making ones a desirable component of ornamental plantings. 30 samples of apple trees with anthocyanin organ coloring in the collection of Scientific Laboratory "Genetic resources, introduction, and breeding of unusual fruit and ornamental crops", located in Agronomic Research Station of the National University of Life and Environmental Sciences of Ukraine have been studied. In 2001 phenological observations during blooming and morphometric analysis of flowers and leaves were carried out, also decorativeness was evaluated. The dominant gene that controls the anthocyanin pigmentation of organs in the apple tree comes from Malus niedzwetzkyana. Now the rank of this taxon is reduced to a variety – M. domestica var. niedzwetzkyana. Niedzvetzky’s apple was involved in crossing with small-fruited apple species to develop ornamental hybrids, some of which received nothospecies names, and in the breeding of fruit varieties and rootstocks of M. domestica. According to the International Code of Nomenclature for Cultivated Plants, varieties with anthocyanin-colored petals having in the pedigree M. domestica var. niedzwetzkyana can be distinguished as Malus Niedzwetzkyana Group. If the Malus Niedzwetzkyana Group is supplemented with varieties with anthocyanin color of petals that originate from other species of apple trees, e.g., M. halliana and M. spectabilis, then the expanded Group can be called Malus Purpurea Group. At the same time, some varieties may belong to other Groups, in particular, Malus Pendula Group, Malus Redflesh Group, etc. The highest decorativeness (5 points) during blooming is inherent for the samples Nos. 2332 'Makamik', 2947, 3100 'Aldenhamensis', 3157 'Pionerka', 3305, 3382, 3540, 3592, 3601, 3603, 3656, 3691, 3692, 4292 and hybrids '17-279', '17-316', '18-275', '18-293', '18-325'. The samples No. 1723 'Lawn Krasnolepestnaya', 3314 'Royalty', 3375 'Black Pearl' are slightly inferior to them in decorativeness, but they have a special habitus or intense anthocyanin color of the leaves, which gives them certain advantages. The use of these samples allows you to establish a conveyor of elongated flowering of red-flowered apple trees at green construction sites.