High Variation in Resource Allocation Strategies among 11 Indian Wheat (Triticum aestivum) Cultivars Growing in High Ozone Environment

• DOI: 10.3390/cli7020023
• Publication Date: 2019-01-29T08:40:55Z
• Authors: Ashutosh K. Pandey; Baisakhi Majumder; Sarita Keski-Saari; Sari Kontunen-Sop...; Vivek Pandey; Elina Oksanen
• Keywords: Stomatal Conductance

Eleven local cultivars of wheat (Triticum aestivum) were chosen to study the effect ambient ozone (O3) concentration in Indo-Gangetic Plains (IGP) India at two high-ozone experimental sites by using 300 ppm Ethylenediurea (EDU) as a chemical protectant against O3. The O3 level was more than double critical threshold reported for grain production (AOT40 8.66 h). EDU-grown plants had higher yield, biomass, stomatal conductance and photosynthesis, less lipid peroxidation, changes superoxide dismutase catalase activities, content oxidized reduced glutathione compared non-EDU plants, thus indicating severity induced productivity loss. Based on yield different growing sites, could be addressed four response groups: (a) generally well-adapted (above-average yield); (b) poorly-adapted (below-average (c) adapted low-yield environment (d) sensitive (adapted high-yield environment). EDU responses dependent cultivar, developmental phase (vegetative, flowering harvest) site.