葫芦瓜自毒作用研究

The Autointoxication Effect of Lagenaria siceraria var.hispida

通过种子萌发试验及幼苗生长试验研究葫芦瓜的自毒作用。结果表明,以葫芦瓜茎、叶、根水浸液分别处理葫芦瓜种子时,对种子萌发率表现出显著或极显著的抑制作用,在同一浓度下,抑制作用为茎>叶>根。在幼苗生长实验中,浓度为10 g/L时,葫芦瓜叶水浸液对其苗高、单苗鲜重、根长都表现出促进作用;随水浸液浓度上升,则表现出抑制作用。经对幼苗进行生理生化作用测定,在浓度为10 g/L时,葫芦瓜叶水浸液对叶绿素a、叶绿素b、类胡萝卜素含量及POD活性均表现出促进作用,随水浸液浓度增高则表现出抑制作用。

The autointoxication effect of Lagenaria siceraria var.hispida was investigated during the seed germination and seedling growth. The results showed that seed germination was significantly inhibited by the water extract of stem, root and leaf. The inhibiting effect of stem was the strongest, followed by leaf and root under the same concentration. Plant height, plant fresh weigh and root length were promoted by the leaf water extract in concentrations of 10 g/L, the inhibiting effect was strengthened with increasing leaf water extract concentrations in the seedling growth test. The content of chlorophyll a, chlorophyll b, carotenoid and peroxidase activity were promoted by the leaf water extract in concentrations of 10 g/L. The inhibiting effect was strengthened with increasing water extract concentration.