SciELO - Scientific Electronic Library Online

 
vol.30 número2Polinização por Apis mellifera em soja transgênica [Glycine max (L.) Merrill] Roundup ReadyTM cv. BRS 245 RR e convencional cv. BRS 133Tratamentos para superar a dormência de sementes de Acacia mangium Willd. índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Acta Scientiarum. Agronomy

versão On-line ISSN 1807-8621

Resumo

ERASMO, Eduardo Andrea Lemus et al. Overcoming seed dormancy in Murdannia nudiflora (L.) Brenan. Acta Sci., Agron. [online]. 2008, vol.30, n.2, pp.273-277. ISSN 1807-8621.  http://dx.doi.org/10.4025/actasciagron.v30i2.1785.

The objective of this study was to identify treatments capable of promoting and standardizing the germination of Murdannia nudiflora (L.) Brenan seeds. The seeds of this weed were submitted to the following treatments: mechanical abrasion with 220-grit sandpaper (20, 30 and 40 frictions); immersion in sulfuric acid (90% for 30 and 40 seconds), followed by washing in running water; immersion in sodium hypochlorite (2.5% for 8 and 12 hours) and lye (5 minutes), followed by five washings in distilled water; immersion in KNO3 (1% for 24 hours); preheating at 40ºC in a humid or dry substrate for 2, 3 and 4 weeks. The statistical design was totally randomized, with four repetitions. The number of germinated seeds was counted every other day. The most favorable treatments were preheating at 40ºC in humid substrate for 3 weeks, followed by mechanical abrasion after 40 frictions and immersion in sulfuric acid for 40 seconds.

Palavras-chave : weed; Commelinaceae; germination.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons