Anatomical Analysis of Graft Compatibility in Some Almond ScionRootstock Combinations

Abstract

In this study, graft compatibility between almond cultivar Lauranne and almond seedling and Rootpac R, Rootpac90, Rootpac 70 and Rootpac 40 clonal rootstocks was anatomically investigated. The anatomical analysis of scion/rootstock combinations was performed by taking cross sections for 30 days and 12 months after T-budding in June,2017. It was determined that, 30 days after grafting, the callus cells developed but cambial continuity has not occurredbetween the rootstock and scion tissues in all scion/rootstock combinations. 12 months after grafting, cambial relationwas established, vascular diffrentiation was observed, regular parenchymatic tissue properties and scleroid (petrosalcell) cells and sclerenchyma bundles were seen in the graft union. There was no problem in terms of rootstock- scioncompatibility in Lauranne almond cultivar which was grafted on almond seedling and some Rootpac clonal rootstocks.