Chinese Bulletin of Botany ›› 2005, Vol. 22 ›› Issue (05): 560-565.

• 实验简报 • Previous Articles     Next Articles

Tissue Temperature of Frost Injury in Strawberry During Anthesis

ZHONG Xiu-Li WANG Dao-Long RAO Min-Jie HE Wei-Xun FENG Yu-Xiang   

  1. (Institute of Agro-Environment and Sustainable Development, the Chinese Academy of Agricultural Sciences, Beijing 100081)
  • Received:2004-11-02 Revised:2005-06-30 Online:2005-10-30 Published:2005-10-30
  • Contact: ZHONG Xiu-Li

Abstract: Simulation tests of spring frost in strawberry (Fragaria ananassa) leaves and receptacles involved use of an artificial climate chamber. Leaves could tolerate intercellular freezing to some extent. At a tissue temperature of -6.4 ℃, leaves could survive 90-min freezing, but receptacles were not able to tolerate intercellular freezing. Receptacles resisted frost injury by maintaining a state of supercooling to avoid freezing. The proportion of receptacles injured was inversely related to decreased receptacle temperature, reaching 50% at -5.4 ℃. Full-blossom flowers and those with heavier fresh weight were susceptible to frost injury even at higher temperatures.