Resumo

SZILAGYI-ZECCHIN, Vivian J.; MOGOR, Átila Francisco; RUARO, Lucimeris  e  RODER, Cinthia. Tomato seedlings growth (Solanum lycopersicum) promoted by bacteria Bacillus amyloliquefaciens subsp. plantarum FZB42 in organic system. Rev. de Ciências Agrárias [online]. 2015, vol.38, n.1, pp.26-33. ISSN 0871-018X.

This study we sought to evaluate the action of the bacteria Bacillus amyloliquefaciens subsp. plantarum in the production of organic seedlings of two cultivars (‘Santa Clara I-5300’ and ‘Cereja 261’) from tomato (Solanum lycopersicum L.) through inoculated seeds. And investigate bacterial characteristics related to plant growth promotion. For this, we used FZB42 solution at a concentration of 1x10¹¹ CFU/mL, with treatments correspond to percentages by volume (20% FZB42; 80% of FZB42 and control 100% distilled water) at a ratio of 320 uL/g seed. The germination percentage was not influenced by the treatments, and FZB42 to 20% increased the shoot in cultivar ‘Cereja’. In seedling production, FZB42 to 20% promoted growth while FZB42 to 80% decreased it. Inoculation with the two doses tested of FZB42 enhanced the contents of chlorophyll a, b and total in the tomato seedling. The FZB42 strain showed positive results for production of indole compounds and siderophore; and in a dose of 20% was more advantageous to the tomato seedling, promoting shoot growth with added of 47.7% for ‘Santa Clara’ and 15.5% for ‘Cereja’ when compared to the control.

Palavras-chave : organic system; plant growth promoting bacteria; inoculant; Solanum lycopersicum.

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