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In this study, a simple, rapid, and efficient plant-mediated green approach was presented for the synthesis of stable and ultra-small zinc telluride quantum dots (ZnTe QDs) using the aqueous extract of the Ficus johannis plant.

Durum wheat (Triticum durum L.) is used for the preparation of multiple food products, including pasta and bread. Its production is restricted due to diverse environmental stresses i.e. drought and heat stress. Here, comparative analysis of durum wheat varieties was done by studying canopy temperature depression (CTD) and chlorophyll content (CHL), yield and yield contributing traits to evaluate their performance under stress and low stress conditions. Twelve durum wheat genotypes were studied under stressful and low-stress conditions in Gachsaran region of Iran. CTD and CHL were measured at two stages, from the emergence of fifty percent of inflorescence (ZGS 54) to watery ripe stage (ZGS 71). According to stress tolerance index (STI), mean productivity (MP) and geometric mean productivity (GMP) indices, genotype G10 exhibited the most, while genotype G6, the least relative tolerance, respectively. Based on MP and GMP, genotype G10 was found to be drought tolerant, while genotype G2 displayed the lowest amount of MP and GMP. Therefore these genotypes are recommended to be used as genitors in artificial hybridization for improvement of drought tolerance in other cultivars. All indices had high correlation with grain yield under stress and non-stress condition, indicating more suitability of these indices for selection of resistant genotype. Results of the present study showed that among drought tolerance indices, harmonic mean (HM), GMP, CTD and modified STI index (K2STI) can be used as the most suitable indicators for screening drought tolerant cultivars.

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Myrtus communis L. is one member of the Myrtaceae family. It is one of the important medicinal plants in the Zagros region of Iran. The Essential oils include a large percentage of compounds called terpenes. In this study, the chemical composition of essential oils of Myrtus (Myrtus communis L.) was identified by the GC-MS method. Results showed that essential oils of populations from different regions have a series of similar compounds, but different in quality and quantity. In fact, they have several organic compounds such as hydrocarbons, alcohols, ketones, aldehydes, ethers, esters, oxides and other volatile oil and so on. Percentage of essential oils in different populations were variable. Essential oil of "Basht" population has 35 compounds such as 1,8-cineole, linalool, α-pinene and lynalyl acetate. Essential oils of "Dehno-Rostam" population has 30 compounds include 1, 8 cineole, linalool, α terpineol, α-pinene. Essential oils of "Sarab-Bahram" population has 19 compounds include α-pinene, 1,8-cineole, linalool, and α terpineol. Essential oils of "Keveshk" population has 29 compounds such as 1,8-cineole, α-pinene, linalool, and α-terpineol and Essential oils of "Tang-Tamoradi" population has 25 compounds include Eugenol, δ-3-carene, 1,8-cineole, and α-terpineol. Aqueous extracts of those populations were evaluated, and the results showed that they have antibacterial properties against Escherichia coli, Bacillus subtilis and Pseudomonas aeruginosa, but have not any antifungal activity (Aspergillus oryzae).