多裂骆驼蓬对食荚豌豆的化感作用研究

Allelopathy of Peganum multisectum Maxim Bobr on edible podded pea

试验研究了多裂骆驼蓬醇提取物浸种对食荚豌豆种子萌发、幼苗生长及生理生化性状的影响。结果表明,多裂骆驼蓬醇提取物浸种显著抑制食荚豌豆种子的萌发和幼苗生长,萌发率、发芽指数和与萌发有关的淀粉酶活性降低,株高、根体积、根系和地上部干重减小,根茎比下降;多裂骆驼蓬醇提取物浸种处理的幼苗根系活力和叶片硝酸还原酶活性、叶绿素和可溶性蛋白质含量下降;超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性降低,丙二醛(MDA)含量和过氧化物酶(POD)活性升高,根系过氧化物同工酶表达受抑。

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.