Year: 2021
Type: article
Abstract: The Qinghai-Tibet Plateau is known for its high altitude, low rainfall and varying temperature, and the crops in this area are susceptible to abiotic stresses induced by drought, salinity and freeze-thaw conditions that cause damages to different properties such as the permeability of biological membrane, osmotic adjustment, and antioxidant enzyme system.Barley (Hordeum vulgare L.) is an indispensable crop on the plateau and plays an important role in agricultural ecosystem as well.In this study, Beiqing 3 was used as experimental material and physiological characteristics, including soluble protein (SP) content, malondialdehyde (MDA) content, antioxidant enzyme activity and relative water content (RWC) of seedlings were examined under freeze-thaw conditions combined with drought and alkali stress.Research results indicated that under the combined stresses of salinity and drought, barley seedlings were damaged by lipid peroxidation, weakened superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) activities, while osmotic adjustment ability in plants cell was enhanced.We suggested that, in agricultural management, the simultaneous occurrence of two stresses, salinity and drought, should be avoided in the early stage of barley planting to reduce the physiological stress on plants.
Institution: Jilin University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W3170233375