The effects of some abiotic and biotic stresses on primary and secondary metabolits in cv. cabernet-sauvignon and cv. merlot

In the research, 13-year-old Cabernet-Sauvignon and Merlot grape varieties grafted on SO4 rootstock were used in the vineyards of Te-Ha Consulting Agriculture Industry and Limited company, which was used as a trial vineyard in Tekirdağ province Süleymanpaşa district in 2016 and 2017. Purpose of the research; 5 days before the harvest, 1 control, 1 biotic stress application (Botrytis cinerea Pers ex. Fr.), 5 abiotic stress applications (shock action, leaf tearing, leaf removal, UV-C, The aim of this study is to study the biosynthesis and effects of primary and especially secondary metabolites, which develop with the defense mechanism that will occur after vibration). In application forms; control, shock action (once at 08:00 and 1:00 at 6:00 for 1 minute with plastic hammer), leaf removal (removal of all leaves), mechanical leaf injury (wound of leaves with stick), UV-C (at 08.00 and 19.00) 1 time for 1 minute), vibration (08.00 and 1 minute vibration for 1 time at 19.00 in the evening) and Botrytis cinerea Pers ex. Fr were applied in the morning and evening, and some applications were performed once. As a result; Considering environmental factors and stress applications, Merlot grape variety synthesized more resveratrol than Cabernet-Sauvignon. Shock application significantly increased all secondary metabolites. Resveratrol was most affected by Botrytis cinerea isolates. All stress applications did not have a statistical effect on primary metabolites.