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Authors Takao, LK; Ribeiro, JPN; Lima, MIS
Author Full Name Takao, Leandro Kenji; Nepomuceno Ribeiro, Jose Pedro; Lima, Maria Ines Salgueiro
Title Allelopathic potential of aquatic macrophytes from a blind estuary
Source ACTA BOTANICA BRASILICA
Language Portuguese
Document Type Article
Author Keywords allelopathic index; allelopathy; germination; Lactuca sativa; ranking
Keywords Plus PLANT
Abstract (Allelopathic potential of aquatic macrophytes from a blind estuary). Aquatic macrophytes represent one of the most productive communities and through metabolic activity are capable of producing great interference in the environment. Allelopathic interactions are apparently increased under biotic and abiotic stress and may exist in estuaries due to competition, salinity variation and other factors. The aim of this study was to evaluate the allelopathic properties of leaf extracts of 25 aquatic macrophyte species from a blind estuary. We tested leaf extract effects in four concentrations on the germination of lettuce. We ranked and compared the donor species according to the dose-response over the variety of treatments through unique values of allelopathic indexes. Eleven of 25 species decreased the germination percentage, all of them decreased the speed of germination and increased the germination informational entropy of the target species seeds in at least one of the tested concentrations. Crinum americanum L., Sagittaria montevidensis Cham. & Schl. and Ipomoea cairica (L.) Sweet presented the highest allelopathic index values. In general, the lowest germination percentages concurred with the lowest germination speed and highest germination informational entropies of lettuce seeds, showing an assemblage of alterations occurring simultaneously with the increase of extract concentrations.
Author Address [Takao, Leandro Kenji; Nepomuceno Ribeiro, Jose Pedro; Lima, Maria Ines Salgueiro] Univ Fed Sao Carlos, Programa Posgrad Ecol & Recursos Nat, Lab Sistemat & Ecol Quim, BR-13560 Sao Carlos, SP, Brazil
Reprint Address Takao, LK (reprint author), Univ Fed Sao Carlos, Programa Posgrad Ecol & Recursos Nat, Lab Sistemat & Ecol Quim, BR-13560 Sao Carlos, SP, Brazil.
E-mail Address lktakao@gmail.com
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SOC BOTANICA BRASIL
Publisher City SAO PAULO SP
Publisher Address CAIXA POSTAL 3005, SAO PAULO SP, 01061-970, BRAZIL
ISSN 0102-3306
29-Character Source Abbreviation ACTA BOT BRAS
ISO Source Abbreviation Acta Bot. Bras.
Publication Date APR-JUN
Year Published 2011
Volume 25
Issue 2
Beginning Page 324
Ending Page 330
Digital Object Identifier (DOI) 10.1590/S0102-33062011000200008
Page Count 7
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number 816EE
Unique Article Identifier WOS:000294580700008
Plants associated with this reference

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