Aplicación de Rizobacterias promotoras del crecimiento vegetal (PGPR) en plantas de balsa Ochroma pyramidale (Cav. Ex Lam.)

The present research aimed to evaluate the effects of the inoculation of PGPR microorganisms in seeds and seedlings to evaluate the germination and growth of the forest species O. pyrdamidale. A Completely Random Design (DCA) with 5 treatments was established for them. The treatments consisted of the following forms of application: T1 = 10%, T2 = 15%, T3 = 20%, T4 = Chemical, T5 = Control. The treatments consisted of 5 repetitions, each repetition consisted of 5 experimental units. The culture medium (PGPR) was prepared for this, using a precision micropipette 20 μl of the PGPR under study and incubated in an Erlenmeyer flask containing 50 ml of liquid King B culture medium, [ (g / L): peptone, 20.0; glycerol, 15 ml; K2HPO4, 1.5; MgSO4 x 7H2O, 1.5; distilled water (pH 7.2)], this solution was incubated in a Benchmark incushaker® shaker at 150 rpm in constant shaking at 26 ° C for 24 hours for its subsequent inoculation in the seedlings. At 60 days after germination, the morphological variables (number of leaves, leaf weight, stem weight, stem diameter, root length, root weight, stem length) were evaluated. The results obtained in the percentage relationship of germination and plant growth, show that the rhizobacteria-based bioproduct effectively promote the growth of seedlings, the promoter effect was superior to the control treatment. Key words: Rhizobacteria PGPR, forest species, germination, plant growth

• Автор: Ponce Quimis, José Ignacio (author)
• Формат: bachelorThesis
• Мова: spa
• Опубліковано: 2021
• Предмети: Rizobacterias PGPR, , ,; Especie forestal; Germinación; Crecimiento vegetal
• Онлайн доступ: https://repositorio.uteq.edu.ec/handle/43000/6316