Chinese Bulletin of Botany ›› 2017, Vol. 52 ›› Issue (2): 159-166.DOI: 10.11983/CBB16030

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Effect of Low Temperature Treatments in Root of Grapevine on PSII Activity in Leaves

Lulong Sun, Qingwei Geng, Hao Xing, Yuanpeng Du, Heng Zhai*   

  1. State Key Laboratory of Crop Biology, College of Horticultural Science and Engineering, Shandong Agricultural University, Tai’an 271018, China
  • Received:2016-02-22 Accepted:2016-04-26 Online:2017-03-01 Published:2017-04-05
  • Contact: Zhai Heng
  • About author:

    # Co-first authors

Abstract: Vitis vinifera cv. ‘Merlot’ roots undergo freezing stress (0°C) or chilling stress (2°C) during cold treatment of grapevine leaves. Fast chlorophyll fluorescence was measured after cold treatment and used to analyze the effect of low root temperature on frost damage in leaves. Low root temperature to different extents led to different frost damage on leaves. Freezing stress (0°C) on roots led to more severe damage on leaves with cold treatment; this kind of damage to PSII was unable to recover. Chilling stress (2°C) applied to roots prevented the severe damage to leaves and was beneficial for recovery in PSII.