Herbal
وجودی مهربانی Vojodi Mehrbani; Iraj Ezzatmand; Ali Abdolzadehfard
Abstract
Introduction: Salinity stress is one of the most important abiotic stresses in the world that influence the plant growth and productivity. The aim of this study was to investigate the effects of salinity stress (0, 75 and 150 mM) and foliar application of nano TiO2 and ZnO (0, 2 and 4 mg L-1)on the growth ...
Read More
Introduction: Salinity stress is one of the most important abiotic stresses in the world that influence the plant growth and productivity. The aim of this study was to investigate the effects of salinity stress (0, 75 and 150 mM) and foliar application of nano TiO2 and ZnO (0, 2 and 4 mg L-1)on the growth and some physiological and biochemical traits of Matricaria chamomilla. Methods: Salinity stress was applied in 3-4 leaf stage of plant under hydroponic conditions. The foliar spraying with nanoparticle was done simultaneously with the initiation of salinity stress. 38 days after second foliar treatment, the plants were harvested to study the desired traits. Results and discussion: The highest flower dry weight was obtained in the NaCl0 × both concentrations of nano ZnO and TiO2. The highest concentration of chlorophyll a (20-50 %) was obtained in NaCl0 × both levels of ZnO and TiO2 nanoparticles and NaCl75mM × 4 mgL-1 nano ZnO. 150 mM salinity increased malondialdehyde and proline content in plant. The results showed that the foliar treatment of TiO2 and ZnO nanoparticles improved elemental content, yield and protein content of the plant under no-salinity, and 75 mM NaCl salinity conditions.
