MULTIPLICATION ON VEGETATIVE WAY OF THE SPECIES WISTERIA SINENSIS WITHIN FOREST NURSERIES

Abstract

Known under the scientific denomination Wisteria sinensis wisteria is an everlasting liana, with size of 10-15 m, with a very vigorous growing and a special decorative aspect. Multiplication of the wisteria is done on generative way (by seeding) or vegetative (by cutting propagation, grafting and marcottage). Multiplication by seeding gives weaker results and the flourishing is long delayed (after 7 years) and do not preserve the characters of mother plant (color, fragrance, size of the inflorescence, richness of flours, etc) so it is preferred the vegetative multiplication. Researches done had as purpose the diversification of intervention methods regarding the marcottage of wisteria with practical applicability. The experiences were performed in the nursery Mihai Viteazu, within Turda Forest Organization, in the period 2005-2006. As materials were used pots in plastic materials of different sizes, bamboo sticks, soil in different compositions, stimulants for roots, grafting knife. It was pursued to obtain some wisteria seeding plants by circular marcottage in pots, using as basis different compositions of organic substrate, as it follows: Alternative 1. – garden soil taken directly from the field of the nursery; Alternative 2. - 50% soil from the field of the nursery + 50% substrate in which the cutting propagation was done; Alternative 3. - 50% soil from the field of the nursery + 25% manure + 25% sand.For stimulating roots penetration, incisions were done in their surface on the parts that were going to enter in direct contact with the soil. In all three cases samples were left with no incisions. The fulfillment of the operation was of 100%, achieving root penetration even in sample alternatives. The differences between alternatives were found out both at the moment of root penetration and at the size and shape of the roots.