EFFECT OF SALT STRESS AND NANO SIO2ON GROWTH, FLOWERING AND ACTIVE COMPONENTS IN Tagete erecta L.

The present experiment was conducted in Horticulture department, Faculty of Agriculture, AL-Qasim Green University during autumn 2020-2019. The marigold seedlings was planted on 25/9/2019 in plastic pots with sized of 7 kg. The experiment was carried out according to (RCBD) as a split plot design system with three replicates. Saline water W2 (10dsm-1) decrease the percentage of nitrogen, phosphorus, potassium and protein and carbohydrates in flowers with high concentration of sodium in the leaves, on the other hand saline water led to increase some active components in flower (Phenols and flavonoids). The fertilizers combinations led to an increase of the phosphorus and potassium contents, while the spraying of silicon has led to an increase in nitrogen, phosphorus, protein and carbohydrates contents in and total flavonoids in Flower.