The effect of rootstock on vegetative development and flower production in modern garden roses (Rosa canina L.)
Keywords:
rootstock, vegetative development, flower stems, garden roses, KosovoAbstract
Production of roses depends on cultivar, rootstock and growing conditions. The use of rootstocks can be highly positive compared with their own roots, especially in the open. Generally in Kosovo roses propagated by grafting, during a year produced about 120-150 thousand seedlings. In Kosovo the most frequent rootstocks for roses are species Rosa canina var. laxa. The purpose of this research was to study level of compatability of rootstock Rosa canina var. laxa, with two groups of modern garden rose: Floribunda Roses and Polyantha Roses, with eight cultivars for each group. Roses are usually propagated by grafting, which is one of the many grafting techniques. A rose rootstock can influence the scion in terms of growth and development in various aspects. Most important are adaptation to certain pH values and drainage conditions of the soil, climatic factors, disease resistance, plant longevity, compatibility, productivity and flower quality. The experiment was conducted during 2018-2020, tested in a commercial farm in Kamenica, Kosovo. During the vegetation are measured these parameters: number and diameter of roots, length of flower stems, diameter of structural shoots, number of flowers, etc. There was found a significant level of compatibility between rootstock Rosa canina var. laxa with all tested roses cultivars.
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