Effect of Different Substrates on Physiological and Biochemical Indexes of Sedum lineare Thunb Under Drought Stress
In order to investigate the reaction and adaptation of Sedum lineare Thunb growing in the four different culture substrate to simulate drought stress, experiments were designed to provide a reference for the selection of modern the artificial roof light matrix. Changes of physiological and biochemical indexes of four kinds of matrix in Sedum lineare Thunb under simulating drought stress were studied. The results indicated that: with the prolonged drought stress, different substrates Sedum lineare Thunb relative water content (RWC) went downward. Chlorophyll content, peroxidase (POD) activity increased firstly then decreased. Membrane permeability, malondialdehyde (MDA) went upward. Sedum lineare Thunb grow well in the light substrate (leaf soil: loam: perlite: vermiculite=4:3:2:1) which showed higher the RWC, chlorophyll content and POD activity in the lowest decline, lower the cell membrane permeability and the MDA content in the lowest smallest increase. Consequently, such light substrate showed strong drought resistance, tended to be the optimal cultivation substrate for Sedum lineare Thunb under drought stress.
drought stresssubstrateSedum lineare Thunbphysiological and biochemical indexes
NETL
NSTL
万方数据
维普
