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  • Title: [Synergistic effects of low temperature in winter and ebb tide at night on Sonneratia apetala seedlings growth and key eco-physiological traits].
    Author: Chen LZ, Du XN, Lu LM, Zheng SJ, Yang SC.
    Journal: Ying Yong Sheng Tai Xue Bao; 2012 Apr; 23(4):953-8. PubMed ID: 22803459.
    Abstract:
    By setting up a set of simulated tidal systems with different air- and water temperature and tidal flood conditions, this paper studied the synergistic effects of low temperature in winter and ebb tide at night on the growth and key eco-physiological traits of Sonneratia apetala seedlings. Low air temperature depressed the seedlings growth, but the reduction in the seedling height and basal stem diameter was compensated 41.2% and 44.6%, respectively by a 5 degrees C increase of water temperature. Low air temperature (15 degrees C) reduced the leaf Fv/Fm significantly, indicating a dramatic reduction in the leaf photosynthetic capacity, whereas the flooded tide with higher water temperature could not compensate this damage. The flooded tide with high air temperature increased the proline and soluble sugar contents in mature leaves, which could protect the mature leaves from cold damage. When extreme cold events occurred, the flooded tide at night worked as a heat storage medium, which alleviated the cold damage on the seedlings growth and leaf physiological traits, and promoted the survival rate of S. apetala seedlings.
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