M.Tech. Agriculture / Sweet peppers (Capsicum annuum L.) are also known as bell peppers or capsicum belonging to the family Solanaceae. The sweet pepper contains various bioactive compounds along with significant amounts of beta-carotene (provitamin-A) and other similar compounds. This technological study was carried out to investigate the influence of photo-selective nets (ChromatiNet™) (red, pearl and yellow), with 40% shading effect, on the morphological parameters (plant height, leaf chlorophyll, stem diameter, leaf area, number of leaves, number of flowers, number of fruit, fruit weight, marketable yield, and pest and disease incidence, the fruit quality parameters (fruit mass, firmness, colour, soluble solids content and titratable acidity) and health promoting compounds (ascorbic acid, lycopene content, β-carotene, total phenols and flavonoids, and antioxidant scavenging activity) of three selected sweet pepper cultivars at harvest maturity stage. The commercially used black net (25% shading) was also included for comparison measures (control). The photosynthetically active radiation, air temperature and relative humidity were monitored throughout the growing period.

M. Tech. Agriculture / Tomatoes (Solanum lycopersicum) and sweet or bell peppers (Capsicum annuum L.) belong to the Solanaceae family. They constitute an excellent source of phenolic (flavonoids), vitamin C (ascorbic acid) and carotenoids (especially lycopene, b- carotene, a precursor of vitamin A), known as antioxidants. The aim of this study was to investigate the influence of photo-selective nets (ChromatiNet™) (red, pearl and yellow) with 40% shading on postharvest fruit quality parameters (Soluble solids content, Titratable acidity, fruit mass and firmness), bioactive compounds (ascorbic acid, total phenols, flavonoid, lycopene, b-carotene contents), antioxidant scavenging activity, odour active aroma compounds and the sensory quality of three indeterminate sweet pepper cultivars HTSP-5 (green), HTSP-3 (red) and Celaya (yellow) and three tomato cultivars (AlfaV, Irit, and SCX 248). A commercial black net (control) with 25% shading was included for comparison.