SciELO - Scientific Electronic Library Online

 
vol.24 número1Triphora uniflora A. C. Ferreira, Baptista & Pansarin (Orchidaceae: Triphoreae): uma nova espécie e primeiro registro do gênero Triphora Nutt. para o estado de São Paulo, Brasil índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Acta Botanica Brasilica

versão impressa ISSN 0102-3306

Resumo

COUTINHO, Flavia Paiva; CAVALCANTI, Maria Auxiliadora de Queiroz  e  YANO-MELO, Adriana Mayumi. Filamentous fungi isolated from the rhizosphere of melon plants (Cucumis melo L. cv. Gold Mine) cultivated in soil with organic amendments. Acta Bot. Bras. [online]. 2010, vol.24, n.1, pp.292-298. ISSN 0102-3306.  http://dx.doi.org/10.1590/S0102-33062010000100032.

Rhizosphere soil samples were collected in a semiarid area, in the region of the São Francisco River valley, Petrolina, Pernambuco state, Brazil, to study the diversity of filamentous fungi in a soil cultivated with melon (Cucumis melo L. cv. Gold Mine) and receiving different organic amendments: Treatment 1 (control, without organic compost); T2 (77% coconut fiber, 20% goat manure and 3% K2SO4); T3 (10% Ricinus communis leaves and stems, 50% Pennisetum purpureum leaves and 40% goat manure); T4 (77% coconut fiber, 20% goat manure and 3% termophosphate); T5 (47% Pennisetum purpureum leaves, 50% goat manure and 3% K2SO4); and T6 (57% Pennisetum purpureum leaves, 40% goat manure and 3% termophosphate). Fungal isolation was carried out by the serial dilution technique to 1:1000. The Sorensen index of similarity, frequency and distribution of the fungi were evaluated. Seventy-eight species of filamentous fungi were isolated and identified, plus several Basidiomycota (04) and Mycelia sterilia (02). The predominant genera were Aspergillus and Penicillium, with 15 and 13 species, respectively. A greater number of species was found in the sowing period (49), and in relation to the organic fertilization, treatment 6 provided the greatest species diversity (43 species). Most of the species are saprobes and only a few are considered to be potential pathogens on melon plants, such as Fusarium oxysporum, F. solani and Myrothecium roridum.

Palavras-chave : semiarid; São Francisco River valley; soil amendments; microorganism.

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

 

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