GERMINAÇÃO E CRESCIMENTO INICIAL DE TOMATE CEREJA COMUM INOCULADO COM Bacillus subtilis E Burkholderia seminalis

Abstract

Tomato belongs to the Solanaceae family and is a popular vegetable crop, due to its high nutritional and sensory quality and culinary versatility. Many microorganisms can improve the development and increase the productivity of commercially important crops. Plant growth-promoting bacteria can promote plant growth through both direct and indirect mechanisms. The objective of this work was to evaluate the germination, emergence speed and initial development of common cherry tomatoes inoculated with Bacillus subtilis ATCC 25858 and Burkholderia seminalis TC3.4.2R3. The concentration used was 108 CFU mL-1 . A randomized block design (DBC) was used, with three treatments (inoculation with B. subtilis, B. seminalis and control without inoculation), with eight blocks. The microbiolization was carried out in the common cherry tomato seeds before sowing, adopting the proportion of 1 mL of bioinoculant per gram of seed. For the control treatment, the seeds were inoculated with sterile nutrient broth. Reinoculation was performed at 15 and 30 DAS by applying 5 mL of inoculant or nutrient broth, in inoculated and control treatments, respectively. Microbiolization with both B. subtilis and B. seminalis increased seedling germination and IVE in common cherry tomato seeds. B. subtilis increased dry mass and radicle length at 15 DAS of seedlings. At 30 DAS, the seedlings showed higher yield in fresh and dry mass of shoots and roots when inoculated with the bacteria. It is concluded that the bacteria promoted greater germination and initial growth of common cherry tomato seedlings and may contribute to a more sustainable agriculture.