Skip to main content
padlock icon - secure page this page is secure

Seed pretreatment with hydrogen peroxide improves heat tolerance in maize at germination and seedling growth stages

Buy Article:

$35.00 + tax (Refund Policy)

Seed pretreatment with hydrogen peroxide (H2O2) can improve stress tolerance due to its biological activity, but the underlying mechanism of its action is largely elusive. This study explored the basis of heat tolerance in maize (Zea mays L.) following seed pretreatment with H2O2. Seed pretreatment indicated increased H2O2 content at 1 and 4 h (32 μmol g−1 fresh weight), which declined at 8 h (12 μmol g−1 fresh weight). Pretreatment of seeds with H2O2 for 8 h and incubation in water for 24 h had little effect at 27°C, but at 42°C, seeds showed enhanced α-amylase activity and soluble sugar contents and decreased H2O2 production, solute-leakage and malondialdehyde (MDA). Pretreatment did not affect seed germination at 27°C, but at 42°C seeds showed improved energy of germination and final germination. Furthermore, at 42°C, the seedlings arising from pretreated seeds exhibited improved net photosynthesis and growth and decreased H2O2 and MDA contents and relative membrane permeability (RMP) compared with those at 27°C. Shoots of H2O2-pretreated seedlings grown at 42°C showed the expression of 27 and 63 kDa heat stable (stress) proteins, which were not expressed in the shoot at 27°C or in the root at all H2O2-concentrations and both temperatures. A possible mechanism of action for H2O2 seed pretreatment, in protecting maize seedlings from oxidative damage is discussed.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: October 1, 2008

More about this publication?
  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Membership Information
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more