SciELO - Scientific Electronic Library Online

 
vol.36 número4Dormência e atividade enzimática de sementes de cultivares de arroz armazenadas em diferentes ambientesTratamento térmico e germinação de sementes do híbrido interespecífico entre o caiaué e o dendezeiro índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Journal of Seed Science

versão impressa ISSN 2317-1537

Resumo

SBALCHEIRO, Cheila Cristina; JOSE, Solange Carvalho Barrios Roveri  e  BARBOSA, Jennifer Carine Rodrigues da Costa Molina. Physiological and sanitary quality, and transmission of fungi associated with Brachiaria brizantha (Hochst. ex. A. Rich.) Stapf seeds submitted to thermal and chemical treatments. J. Seed Sci. [online]. 2014, vol.36, n.4, pp.443-450. ISSN 2317-1537.  http://dx.doi.org/10.1590/2317-1545v36n41032.

The Brazilian pastures establishment success depends on the use of seeds with high physiological and sanitary quality. The aim of this study was to evaluate the effect of thermal and chemical treatments on quality of Brachiaria brizantha, cv. BRS Piatã and pathogen transmission via seed. The treatments included the use of fungicides, detergent, sodium hypochlorite, sulfuric acid and alcohol, as well as thermal treatments. In addition to seeds without treatment, nine treatments were tested. The tests used to assess the physiological quality of the seeds were first and final count of germination test and root protrusion; germination and root protrusion speed index. A transmitting test and filter paper method had been performed for sanitary quality. Fungal lower incidence was observed in seeds treated with alcohol, however, this treatment reduced the physiological quality of the seeds and higher frequency of fungi transmission from seeds to seedlings was observed for Bipolaris sp., Fusarium sp. and Phoma sp. Treatment with sulfuric acid provided a better seed germination performance and reduced the incidence of fungi.

Palavras-chave : germination; vigor; seed-seedling; incidence; forage.

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

 

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