Abstract
Abstract. The article describes the results of studying the morphological features of 93 forms of P. caucasica Fed. collected in various regions of the Caucasus. The research was carried out in the collection gardens score, and samples with lower scores, but having one or more attractive decorative features. The studied samples of the Caucasian pear had valuable decorative qualities to varying degrees: narrow pyramidal crown (index 2.16) – Kasp-69-59; rounded crown (index 0.88) – 67-Chr-249, 67-B-208, Ard-69-18; large flowers – Ter-69-77, 67-Ku-139, 67-BZ-37, B-69-111, 67-BZ-67, B-69-87, Kasp-69-59; abundant flowering – P. caucasica Fed. № 2, P. caucasica Fed. №3, P. caucasica Fed. №6, B-69-88, L-69-98, L-69-101, Shali-69-36; attractive appearance of leaves, absence of fungal diseases – Arg-69-34, 67-B-190, Ur-69-1, 67-Chr-250, B-69- 78; anthocyanin integumentary coloration of fruits – P. caucasica Fed. №4 and №5, B-69-108, Kasp-69-59. Frost resistance of plants was an important feature for the use in ornamental gardening. This property was noted in the samples of P. caucasica Fed. №4, B-69-78, Ard-69-18. Samples B-69-90, B-69-78 had edible sweet fruits. Selected forms of the Caucasian pear retained their decorative properties during the growing season. The forms B69-88, B-69-78, Kasp-69-59, L-69-96, 67-Ku-127 can have the greatest value for breeding in terms of the sum of points and the presence of valuable features. Keywords: the Caucasus, the Caucasian pear, decorativeness, morphology, diversity of features, selection, breeding Financing source: The research was carried out at the expense of a grant from the Federal State Budgetary Educational Institution «Maikop State Technological University» «Assessment of various forms of Caucasian pear (P. caucasica Fed.) for breeding for decorative purposes», registration number of the scientific project: NP 8-2024 of the Maikop Experimental Station – a branch of All-Union Research Institute of Plant Breeding (VIR) in 2021-2023s in accordance with modern methods of studying and assessing the decorative properties of research objects. Twenty-two samples were identified, including those with the highest total decorative
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