Potential for seed bank formation of two weed species from brazilian Amazonia

Resumo

The potential for seed bank formation of two perennial weed species, Ipomoea asarifolia (Desr.) Roem. & Schult. (Convolvulaceae) and Stachytarpheta cayennensis (Rich.) M. Vahl (Verbenaceae), both common in Amazonia , was evaluated in a degraded pasture area in eastern Brazilian Amazonia . Seeds were enclosed in nylon mesh packets and placed at the soil surface or buried at 5 or 10 cm deep. The number of viable seeds was recorded at 6, 10, 14 and 18 months after burial. Results showed that S. cayennensis has the ability to form persistent soil seed bank, while I. asarifolia seeds do not build up in the soil seed bank. For S. cayennensis and, to some extent, for I. asarifolia, seed survival was highest at greater burial depths.

Resumo conforme Crossref.

Palavras-chave

• Ipomoea asarifolia
• Brasil
• Erva Daninha
• Semente
• Stachytarpheta Cayennensis
• Amazonia
• Seeds
• Weeds

Termos atribuídos na Alice (Embrapa) (incluindo Thesagro e NAL Thesaurus).

Fontes bibliográficas

Esta publicação está registrada em 4 fontes de metadados.

• Alice (Embrapa)Handle doc/400419Abrir registro em Alice (Embrapa) (nova aba)
• CrossrefDOI 10.1590/s0100-83581999000200002 · ISSN 0100-8358Abrir registro em Crossref (nova aba)
• Currículo LattesISSN 01008358Abrir registro em Currículo Lattes (nova aba)
• OpenAlexW2117112205 · DOI 10.1590/s0100-83581999000200002 · ISSN 0100-8358 · ISSN 1806-9681Abrir registro em OpenAlex (nova aba)