小根蒜对花生田3种主要杂草马唐、稗草和反枝苋的化感作用

在室内用离体生测方法测定了小根蒜水浸提液对花生田主要杂草马唐、稗草和反枝苋种子萌发和幼苗生长的影响。结果表明,小根蒜水浸提液对3种杂草种子的萌发和幼苗生长均有较强的抑制作用。3种受体杂草中,以反枝苋和马唐较为敏感,0.0500g/mL浓度处理下种子均受到完全抑制不能萌发,在0.0250g/mL处理下反枝苋、马唐和稗草种子的萌发率分别为38.46%,50.00%和85.71%。相同浓度处理时,小根蒜水提物对3种杂草根长的生长抑制作用均明显高于对苗高的抑制作用。

Research on allelopathic effects of Allium macrostemon on three main weeds (Digitaria sanguinalis, Echinochloa crusgalli and Amaranthus retroflexus) in peanut fields

Allelopathic effects of aqueous extract from Allium macrostemon were tested in Petri-dishes. The extract strongly inhibited germination and seedling growth of Digitaria sanguinalis, Echinochloa crusgalli and Amaranthus retroflexus. D. sanguinalis and A. retroflexus were more sensitive to the extract than E. crusgalli. At 0.025 g/mL concentration, the germination rates of A. retroflexus, D. sanguinalis and E. crusgalli were 38.46%, 50.00% and 85.71%, respectively. On one seed, the germination speed was reflected in the germination rate, but was more sensitive to the extract. The roots were more strongly inhibited than seedling height at the same concentration.