Influence of the position of some bud variety of graft Vitis vinifera L. native of Algeria in relation to the rootstock eye

Abstract

The current situation of Algerian wine is characterized by a decline in area and low production fluctuates from year to year, especially for indigenous varieties that are progressive degradation pathway. A better valorization of existing resources is necessary. It comes to an essential step in the selection of performance genotypes and improved production in Algeria. It therefore appears increasingly important to favor sustainable development and protection of local species. The objective of our research was to determine the influence of the position of the bud graft relative to the eye rootstock (opposite position “P1” on the same side or “P2”), on the success to grafting, improving the quality of the shoots and rhizogenesis by applying Omega graft. The wood from the grafts were collected at station Benchicao (Medea mountain area) from older vineyards in production, the rootstock comes from the parent vines of nursery plant production where the experiment was realized. The results have shown that genotypes were behaving differently. Among the varieties studied, the variety Ahmar Bou Amar has the highest rate of resumption (94%) in P1 position, with good vegetative development, vigorous shoots, a good root system and a good weld of the graft union, answering the standards of current commercialization.