The Settlement of Erigeron annuus (L.) Pers. and Analysis of the Reasons for Reproductive Success

摘要

The reasons for the broad distribution ofErigeron annuusin Central Russia (its biology (habitat, seed productivity, seed distribution) and its ability to exert allelopathic influence) are discussed. The following indicators were used in the experiments to assess the effect ofErigeron annuuson other species: seed germination, development rate, and length of the hypocotyl. The seeds ofErigeron annuuswere found to inhibit the development of seedlings in a number of species (Trifolium pratense,Raphanus sativus, andAvena sativa). The majority of the experiments clarifying the effect ofErigeron annuuswere performed onTrifoliumpratense.