Improvement in growth and leaf water relation parameters of sunflower and safflower plants with foliar application of nutrient solutions under salt stress

摘要

Effect of nutrient solutions viz., KNO3, H3BO3, Fe EDTA, and their mixture applied through foliar spray on growth and water relation was assessed in sunflower and safflower plants under salt stress. Salt stress impaired growth by reducing fresh weight of both the plants. Imposition of salt stress also had adverse effects on leaf water relation parameters, relative leaf water content (RLWC), water potential (Ψw), osmotic potential (Ψs) and turgor potential (Ψp). All the water relation parameters were improved with the foliar application of nutrient solutions. The ameliorative effect of mineral nutrition on fresh biomass of both the plants under saline conditions was due to the nutrients-induced improvement in plant water status.