Abstract:
A pot experiment was conducted to investigate growth and physiological indicators of
Taxodium ‘Zhongshanshan 406’
T. mucronatum Tenore ♀ ×
T. distichum(Linn.)Rich ♂under three different water treatments,and whether the tested plant can be used in the construction of wetland.Three water treatments were designed:cotrol(water content to be 70% of the field water capacity),soil waterlogging(water surface and soil surface on the same level)and soil submersion(10 cn surface water layer).Results show that when compared to the control,soil waterlogging and soil submersion significantly increased the plant's ground diameter and reduced its ratio of root dry weight to shoot dry weight,but had no significant effects on its height,fresh weight,height increase rate and fresh weight increase rate.Soil submersion also increased P,K,Na and Mg contents significantly in its roots as compared to the control.However,no significant differences were observed between the three water treatments in leaf chlorophyll content,SOD activity,POD adtivity,MDA content and root activity.In addition,
T. ‘Zhongshanshan 406’ displayed its excellent adaptability to soil submersion,having amplitude lenticels and aerial roots.In short ,
T. ‘Zhongshanshan 406’is tolerant to water stress and has an outstanding potential as a wetland plant.