Abstract
In this study, graft compatibility between almond cultivar Lauranne and almond seedling and Rootpac R, Rootpac 90, 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 occurred between the rootstock and scion tissues in all scion/rootstock combinations. 12 months after grafting, cambial relation was established, vascular differentiation was observed, regular parenchymatic tissue properties and scleroid (petrosal cell) cells and sclerenchyma bundles were seen in the graft union. There was no problem in terms of rootstock- scion compatibility in Lauranne almond cultivar which was grafted on almond seedling and some Rootpac clonal rootstocks.
Highlights
Fruits have gained more interest in recently due to high nutritional value, phytochemical content and human health effects
Callus cells developed but cambial differentiation between rootstock and scion tissues has not begun in the sections budded onto seedling, Rootpac R and Rootpac 70 rootstocks
In the cross sections taken 12 months after budding of Laurenne onto seedling rootstock, budding formation was found successful, cambial continuity sustained, new transmission tissues formed from the cambium, callus cells gained regular parenchymatic tissue properties and numerous sclereid cells were encountered in the parenchymal cells (Figure 2)
Summary
Fruits have gained more interest in recently due to high nutritional value, phytochemical content and human health effects. Almond has a high nutritional value, and is used as raw material in many sectors including food, cosmetics and pharmaceutical industry (Gebauer et al 2016; Taş & Gökmen 2017). Cultivation and trade of the almond around the world is significant. The most important factor limiting the cultivation of almond in the world is special ecological demands. Factors such as high lime rate of soil and some soilbased diseases play a limiting role in almond cultivation. The need for rootstock to overcome these limitations is essential for growing stone fruit, including almonds, in many regions of the Mediterranean basin (Felipe 1989).
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