The effects of water stress and mycorrhiza inoculation on drought resilience in some prunus rootstocks

Rootpac 40, Rootpac R, GF 677 and Garnem rootstocks were used in the study, in which the response of some stone fruit rootstocks to limited water application and the basic parameters on the resistance mechanism of the plant and the effect of mycorrhizal inoculation on these parameters were investigated. The experiment was carried out in the form of pot experiments using grafted and ungrafted plants in glass greenhouse conditions. Control (K100) plants were irrigated to 100% of the field capacity water level. Water was given to the K55 application at the level of 55% of the K100 irrigation, and to the K40 application at the level of 40% of the K100 application. In 2019, a preliminary trial was conducted by using Glomus mosseae, Glomus etunicatum and Glomus clarium mycorrhiza species. In the 2020 trial, limited water was applied to the plants, half of seedlings grafted with the Carolina nectarine variety. In the 2021 trial, limited water application was made by Glomus mosseae mycorrhiza species inoculation to both nectarine grafted and non-grafted plants. Mycorrhizae inoculated seedlings under drought stress showed higher plant height, leaf number, leaf area, plant biomass, chlorophyll amount, photosynthesis rate, relative water content, transpiration rate, water use efficiency, osmotic potential, total sugar, total phenol to their values; it was found to have lower damage levels and H2O2 values. Mycorrhiza application positively affected the plant leaves N, P, K, Ca and Mg concentration.