The activity of roots was increased when the concentration was low, and it was inhibited when the concentration was high.Allelopathy of roots and tops of coriander was similar.

• 芫荽水提液可使辣椒幼苗的丙二醛含量增加，随着水提液浓度的增加，根系活力先增加后降低，地上部和根部水提液的化感效应相似。