Allelopathy of Peganum multisectum Maxim Bobr on edible podded pea

Effects of different concentration of alcohol extracts from peganum multisectum Maxim Bobr, in which the seeds of edible podded pea were soaked, on seed germination,growth and physiological characters of the seedlings were investigated. The results show that the treatments with 0.10～0.40g/mL alcohol extracts from peganum multisectum Maxim Bobr significantly inhibit seed germination and seedling growth of edible podded pea. And the germination rate, germination index, amylase activity, plant height, root volume, dry weight of seedling and ratio of root to shoot are decreased. In addition the root vigor, nitrate reductase activity, contents of chlorophyll and soluble protein in leaves of the treated seedlings are decreased remarkably. The activities of superoxide dismutase (SOD) and catalase (CAT) are dropped significantly while peroxidase (POD) activity,malondialdehyde (MDA) content increased, the expression of isoperoxidase patterns in root is inhibited.