Effect of Progressive Drought and Subsequent Water Recovery on MDA Accumulation and Anti-oxidant Enzyme Activity in Leaves of Birdsfoot Trefoil
In our study,two population of Lotus corniculatus L.were selected as experimental material in order to study physiological response of plants subjected to 4,8,12,16d drought stress and subsequent 4d,8d re-watering treatments.Results indicated that leaf relative water content (RWC)decreased with the progression of drought whereas the chlorophyll content,malondialdehyde content (MDA),as well as activities of superoxide dismutase (SOD) and peroxidase (POD) increased firsly and then declined.After re-watering treatments,most parameters were recovered in certain degree,however,POD activities were significantly lower than the control and cell membrane damaged was not reduced assessed by the MDA accumulation.Differences were also observed between two populations when subjected to drought stress.Based on these differences,it is concluded that the wild-typed population,which adapted to wet environment,showed a lower tolerance to drought.
Lotus corniculatus L.drought stressre-wateringantioxidant enzyme system
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维普
