SciELO - Scientific Electronic Library Online

 
vol.53 issue6Thermodynamics of molecular recognitions between antineoplastic drug taxol and phosphatidylcholineAntimicrobial activity of essential oils from Pimenta pseudocaryophyllus and Tynanthus micranthus author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Archives of Biology and Technology

Print version ISSN 1516-8913

Abstract

CHAPLA, Tatiani Elisa  and  CAMPOS, João Batista. Allelopathic evidence in exotic guava (Psidium guajava L.). Braz. arch. biol. technol. [online]. 2010, vol.53, n.6, pp. 1359-1362. ISSN 1516-8913.  http://dx.doi.org/10.1590/S1516-89132010000600012.

The allelopathic activity of the leaf aqueous extract of guava (Psidium guajava L.) on seed germination and root growth in lettuce (Lactuca sativa L.) was studied in an experiment consisting of four replicates with 10 seeds each and extract concentrations of 5, 10, and 20%. Guava allelopathic activity occurred during the germination and growth of lettuce roots at 20% extract concentration, as shown by ANOVA. This result suggested the allelopathic potential of the species. Therefore, the success of P. guajava in invading environments could be partially due to allelopathy. Further studies using other plant parts and field experiments should be conducted.

Keywords : Abandoned pastures; allelopathy; biological invasion; riparian vegetation; seeds.

        · abstract in Portuguese     · text in English     · pdf in English