The Physiological Responses of Maize Seedlings with Different Amylose Content to Drought Stress

Abstract In this study, we investigated the physiological responses of maize with different amylose content at seedlings to drought stress. For waxy (WMS) and normal (NMS), decline photosynthesis under stress (DS) was due stomatal limitation. DS increased non-photochemical quenching coefficient (NPQ), whereas decreased activities peroxidase (POD) plant height (PH), compared plants irrigation. The starch significantly upon moderate severe stress, respectively. high (HAMSs), they showed limitation while non-stomatal NPQ POD contrary trend WMS NMS. PH them. principal component analysis (PCA) HAMSs were more sensitive than GBSSIIa level also lower that Therefore, conclude respond through redox regulation avoid oxidative damage, NMS by increasing biosynthesis, higher may produce amylose, which could promote growth effectively.