Effects of waterlogging and flooding stresses on the growth and physiology of white birch roots
In order to understand the adaptability of white birch (Betula platyphylla Suk.)roots under waterlogging and flooding stresses,we studied the effect of waterlogging and flooding stresses on morphology and physiology of the roots of two-year-old white birch seedlings.Three treatments-control,waterlogging and flooding were carried out with duration of 36 days.The results suggested that:1) The roots of the white birch generated adventitious roots under the waterlogging and flooding treatments,and the waterlogging treatment generated more adventitious roots than the flooding treatment;2) The dry mater content of roots under the flooding treatment was significantly lower than that of the control;3) The POD and SOD activities changed similarly under the waterlogging and flooding stresses,and were significantly higher than that of the control;4) The MAD content in roots under the flooding treatment was significantly higher than that of the control.5) The proline content differed significantly among the three treatments.The proline content under waterlogging and flooding treatments was significantly higher than that of the control.The results indicated that the roots of white birch under waterlogging and flooding treatments reduced damage by the formation of adventitious roots and the changes in physiological and biochemical characters.
Betula platyphylla Suk.waterlogging and flooding stressphysiological indicesdry matter content
NETL
NSTL
万方数据
维普
