Seed Germination and Physiological Characteristics of Amaranthus mangostanus L. under Drought Stress

Abstract:

Effects of drought stress on the seed germination and physiological characteristics of amaranth were investigated. The results were as follows: the germination rate and germination potential of amaranth decreased with the increasing of PEG-6000 concentrations. Meanwhile, the root length, shoot length and peroxidase (POD) activity were significantly increased at lower PEG-6000 concentrations, but then decreased with the increasing of PEG-6000. Malondialdehyde (MDA) content, proline content and superoxide dismutase (SOD) activity were all significantly increased under drought stress, and reached the top at 20% PEG-6000. These findings indicated that amaranth tolerates drought stress through increasing the activities of SOD and POD and accumulating proline content.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 1071-1074
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.1071
• Online since: January 2011
• Authors: Yong Dong Sun, Xiao Hua Du, Wen Jie Zhang, Li Sun, Ran Li
• Keywords: Amaranthus mangostanus L., Drought Stress, Physiological Characteristics, Seed Germination

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