The influence of the cuttings epoch regarding the rooting at Aster novae-angliae species

Abstract

Species originating in North America (southern Canada, eastern and central USA) Aster novae-angliae L. (Symphyotrichum novae-angliae (L.) G.L. Nesom), was introduced in Europe as an ornamental species, which became naturalized in many countries, including Romania. Perennial and hemicriptophyte plant, it can multiply both by seed or vegetative way. This paper aims to study the propagation by plants cuttings from three local populations of Aster novae-angliae identified in individual gardens from NE area of Romania, respectively in Suceava and Botosani counties. There were made four types of stem cuttings (simple peak cuttings, simple cuttings of stem sections with a node, simple cuttings of stem sections with 3-5 nodes, cuttings with heel) in two epochs, using cuttings characterized by different degree of tissues maturations (herbaceous and semilignified). The results showed that for aster plants from Marginea population are effective herbaceous cuttings, for Humoreni population are effective the herbaceous cuttings of stem sections with one or more nodes, or semi-lignified cuttings with heel, and for Darabani population are effective especially herbaceous cuttings with heel.