THE EFFECTS OF SUBMERGENCE ON PROTECTIVE ENZYME ACTIVITIES OF BEMUDAGRASS GROWTH IN WATER-LEVEL-FLUCTUATION ZONE OF RESERVOIR
The submergence experiment was conducted on Bermudagrasses originally growth in water-level-fluctuation zone and non-water-level-fluctuation zone in branch stream of Changtan reservoir area,Zhejiang province.Two treatment with submerged time of 15 and 30 days were carried out to investigated the protective enzyme activities and MDA contents of Bermudagraas.The results showed that the leaf MDA contents of Bermudagrass originally growth in water-level-fluctuation zone increased more slowly than those growth in non-water-level-fluctuation zone after submergence.At the early stage of submergence,leaf SOD and POD activities of two treatments were obviously increased while those of two treatments were obviously decreased at the late stage of submergence.But leaf protective enzyme of Bermudagrasses originally growth in water-level-fluctuation zone is higher than that growth in non-water-level-fluctuation zone during submergence.It indicated that the adaptation of Bermudagrasses originally growth in water-level-fluctuation zone is stronger than that growth in non-water-level-fluctuation zone.