Effects of drought stress on reactive oxygen species and their scavenging systems in Chlorophytum capense var. medio-pictum leaf

doi:10.11686/cyxb20130529

Abstract

Abstract: The effects of drought stress on reactive oxygen species and their scavenging systems of leaf blade and the center parts of Chlorophytum capense var. medio-pictum were studied. 1) The content of H₂O₂, O₂^-· and MDA gradually increased with the stress time, while the activity of SOD and POD increased in the earlier days, but then declined. 2) The content of reactive oxygen species (H₂O₂ and O₂^-·), activity of scavenging enzymes (SOD and POD) and the content of MDA increased gradually as the PEG concentration increased. 3) The comprehensive evaluation of drought tolerance by the membership function method indicated that there were clear position effects, and drought resistance in the center part of the leaf was stronger than that in the blade of the leaf. 4) Drought resistance was negatively correlated with chlorophyll content: the higher the chlorophyll content, the weaker the drought tolerance. Drought resistance in C. capense var. medio-pictum was better than that of C. capense.

CLC Number:

JIA Xue-jing, DONG Li-hua, DING Chun-bang, LI Xu, YUAN Ming. Effects of drought stress on reactive oxygen species and their scavenging systems in Chlorophytum capense var. medio-pictum leaf[J]. Acta Prataculturae Sinica, 2013, 22(5): 248-255.

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