Physiological and biochemical responses of six herbaceous peony cultivars to cold stress Academic Article uri icon

abstract

  • Although herbaceous peony cultivars have been introduced and promoted widely, a key limitation to their use is their level of cold hardiness. In this study, the physiological and biochemical responses of six herbaceous peony cultivars to different temperatures and periods of exposure to freezing temperatures were assessed by analyzing changes in six indices. Under our experimental conditions, relative electric conductivity, soluble sugar concentration, soluble protein concentration, and malondialdehyde concentration generally increased as temperature declined, while proline content decreased. Superoxide dismutase activity fluctuated. After the same indicators were used to assess cold resistance over time at - 20 C, the six cultivars could be ranked, in decreasing levels of cold resistance, as: 'Da Fu Gui', 'Fen Yu Nu', 'Kansas', 'Monsieur Jules Elie', 'Taff', and 'Pink Hawaiian Coral'. 2014 South African Association of Botanists.

published proceedings

  • SOUTH AFRICAN JOURNAL OF BOTANY

author list (cited authors)

  • Wang, Q. i., Cheng, T., Yu, X., da Silva, J., & Byrne, D. H.

citation count

  • 11

complete list of authors

  • Wang, Qi||Cheng, Tangren||Yu, Xiaonan||da Silva, Jaime A Teixeira||Byrne, David H

publication date

  • January 1, 2014 11:11 AM