Responses of Eight Differentially Heat Sensitive Tomato Cultivars against Chronic Ozone Exposure in the Indo-Gangetic Plain: Growth, Physiology, and Yield

Tropospheric ozone (O3) is an important abiotic stress to plants and its rising concentration adversely affects crop yield. The studies associated with differential responses of tomato (Solanum lycopersicum L.) cultivars chronic elevated O3 are lacking need be further explored for the recognition resistant as adaptive strategy. In present research, differentially heat sensitive were treated (ambient + 20 ppb) determine their by estimating foliar injury symptoms, variations in growth, physiology, reproductive yield related attributes. All exhibited symptoms under treatment, intensity corroborated loss. Elevated treatment negatively impacted biomass, physiological characteristics all cultivars. hierarchal cluster analysis, cumulative response index indices differentiated into sensitive, moderately tolerant categories. thermotolerant, VRT02 Kashi chayan (O3 resistant) demonstrated lower losses, whereas thermotolerant sensitive) Superbug higher injury, greater alterations growth traits resulting losses than other different sensitivity did not respond similarly towards stress. Cultivars VRT 02 can recommended cultivation areas experiencing high vis-à-vis temperature conditions.