Interactive Effect of Fluorescent Pseudomonads Rhizobacteria and Zn on the Growth, Chemical Composition, and Water Relations of Pistachio (Pistacia vera L.) Seedlings under NaCl Stress
2016
Azarmi, Farhad | Mozaffari, Vahid | Hamidpour, Mohsen | Abbaszadeh-Dahaji, Payman
The role of fluorescent pseudomonads isolates (pf ₀, pf ₁, pf ₂, and pf ₃) and zinc (Zn) (0 and 5 mg kg ⁻¹ soil) interactions in alleviating salinity in pistachio seedlings were investigated. The experiment was conducted following completely randomized design with three replicates. The results revealed that salinity decreased the growth parameters, while application of PGPR (plant growth-promoting rhizobacteria) and Zn increased these parameters. Application of PGPR significantly enhanced phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), Zn, Ca/sodium (Na), and K/Na contents, while decreased the accumulation of Na and chloride (Cl). Application of PGPR and Zn increased the phenolic compounds, sucrose, membrane stability index (MSI), and relative water content (RWC) but reduced the malondialdehyde (MDA) amount. A positive correlation was observed between Zn concentrations with seedling dry weights, phenolic compounds, MSI, and RWC contents. These results indicated that the combined application of PGPR and Zn could be a simple treatment for growth and establishment of pistachio seedlings under Zn deficiency and soil salinity.
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