GRAFTING OF GRAPEVINES – THE FACTORS THAT INFLUENCE THE OBTAINING OF QUALITY PLANTING MATERIAL. STUDIERS AND RESEARCHES CARRIED ON

Rezumat

After the decimation of vineyards caused by the attack of the Phylloxera insect (Daktulosphaira vitifoliae) in the end of XIX century, a real industry of producing planting material had to be developed with relatively high costs and often low yields. In order to provide answers to these problems, researchers in the field have studied all the technological stages and factors that can influence this complex process with the aim to obtain new healthy and vigorous plants that gives quality harvests.This paper presents the current situation of the issue of producing vine planting material in the world and in Romania. Emphasis is placed on revealing the critical points encountered in the production process of grafted vines, starting from the quality and health status of the scions and rootstocks, their storage method, the grafting technique, callus and the communicating vessels formation and the nursery management.