Important Physiological Changes Due to Drought Stress on Oat

As temperatures rise and water availability decreases, the decit is gaining attention regarding future agricultural production. Drought stress a global issue adversely affects productivity of different crops. In this study, drought-tolerant varieties oats were screened to determine that may be employed in drought-prone areas achieve sustainable development mitigate impact climate change. To do so, growth adaptive mechanism 15 domestic overseas oat cultivars at seedling stage analyzed. Water was simulated using 20% polyethylene glycol (PEG-6000). The results showed soluble protein content superoxide dismutase activity variety DY2 significantly increased under drought stress, whereas photochemical efficiency relative decreased slightly. electrical conductivity (REC) damage index QH444 least. peroxidase Q1 increased, catalase Q1, QH444, also substantially increased. Principal component analysis revealed nine physiological biochemical parameters transformed into three independent comprehensive indexes. evaluation DY2, LN, exhibited strong resistance capacity could used as reference material for drought-resistant breeding program. gray correlation indicated Fv/Fm, chlorophyll, REC, malondialdehyde key indexes evaluating oat.