The effect of different colored netting on morphological and physiological traits of ‎common marigold, violet, croton and aglaonema‎

A new group of colored shades called photo-selective netting shades are being developed, which can the affect the quality and quantity of light received by the plants, and at the same time provide optimal protection for them. Therefore, in order to investigate the use of colored shades (red, green and yellow) on the morphological and physiological characteristics of marigold, violet, croton and aglaonema, two separate experiments were carried out in winter and spring at Lahijan Flower and Ornamental Plants Research Station. The evaluated morphological traits included: plant height, fresh and dry weight of shoot and physiological traits included chlorophyll, carotenoid, anthocyanin, flavonoid, antioxidant capacity and catalase and peroxidase enzymes. The results showed that the yellow shade increased the vegetative power of the plants. The interaction effects of shade and plant species showed that the highest plant height, chlorophyll content and carotenoid content the plant were related to yellow shade and violet treatment. The results showed that the highest amount of anthocyanin, carotenoid and catalase was obtained under the red shade and the highest amount of total chlorophyll was obtained under the red and yellow shades in croton and aglaonema. The results of this research showed that the use of colored shades compared to not using shades created more favorable growth conditions for plants. Also, the yellow and red shades were better for the growth of the tested plants than the green shades and no shade and had a more favorable effect on the growth of the plants.