Data/hora: 12/06/2024 00:51:25

Provedor de dados: | 91
País: | Brazil
Título: | Origin and temperature on the germination of beggartick seeds
Autores: | Barros,Renato T. de; Martins,Cibele C.; Silva,Givanildo Z. da; Martins,Dagoberto.
Data: | 2017-07-01
Ano: | 2017
Palavras-chave: | Bidens pilosa; Weed; Production sites; Dormancy.
Resumo: | ABSTRACT The invasive behavior of beggarticks (Bidens pilosa L.) in cropped areas is due to its ecological adaptation and aggressive regeneration, which is dependent on seed germination. The objective of this research was to verify the effects of B. pilosa seed origin and temperature on seed germination. The seeds were collected in Entre Rios do Oeste, PR, Botucatu, SP, Capão Bonito, SP, São Joaquim da Barra, SP, Sertãozinho, SP, Selvíria, MS, Barra do Garças, MT, Areia, PB and Manaus, AM. The seeds were evaluated regarding moisture content, 1000-seed weight, germination speed index and germination at 60 days (normal seedlings, dormant seeds and dead seeds) at the temperatures of 10, 15, 20, 25, 30, 35, 40, and 45 ºC. The replicates were distributed according to a completely randomized design in a 9 x 8 factorial arrangement (seed origin x temperature) with four replicates. The means were compared by the Scott-Knott test. B. pilosa seeds germination depends on seed origin. Temperatures higher than 35 ºC are lethal to the seeds. The temperature of 15 ºC allows maximum germination in the shortest time whichever the seed origin.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700448
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v21n7p448-453
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.21 n.7 2017
Fonte: | info:eu-repo/semantics/openAccess