Banca de QUALIFICAÇÃO: LUIZ GUSTAVO LOPES BORBA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LUIZ GUSTAVO LOPES BORBA
DATE: 20/10/2025
TIME: 08:30
LOCAL: Sala de Aula do Prédio da Pós-graduação - EAJ
TITLE:

INFLUENCE OF Arthrospira platensis BIOMASS EXTRACT ON GERMINATION AND VIGOR OF FOREST SEEDS FROM THE CAATINGA

KEY WORDS:

spirulina, bioestimulant, sabiá, juazeiro, craibeira.

PAGES: 42
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Silvicultura
SPECIALTY: Sementes Florestais
SUMMARY:

The application of biostimulants in agriculture and forestry has been consolidated as an effective strategy to optimize crop growth and productivity. Among the various products available for this purpose, microalgae extracts have attracted growing interest due to their high metabolic activity, the presence of bioactive compounds, and their potential to significantly promote plant development. Thus, the objective of this study was to analyze the influence of Arthrospira platensis (Spirulina) extract on seed germination and seedling vigor of Mimosa caesalpiniifolia, Sarcomphalus joazeiro, and Tabebuia aurea. The experiment was conducted in a completely randomized design, consisting of four treatments: (T0) 0% Spirulina (control), (T1) 1% Spirulina, (T2) 2% Spirulina, and (T3) 2.5% Spirulina, with eight replications of 25 seeds. The physiological quality of the seeds was determined based on germination, first count, germination speed index, emergence test, emergence speed index, seedling length, and seedling dry mass. For Mimosa caesalpiniifolia seeds, no statistically significant differences were observed in most variables compared to the control treatment, suggesting that the evaluation of A. platensis extract in other formulations and concentrations than those tested in this study is recommended. However, for Sarcomphalus joazeiro seeds, treatment T2 (2% Spirulina) provided superior performance in all analyzed variables, highlighting its potential as an efficient biostimulant for the species.

COMMITTEE MEMBERS:
Presidente - 1880265 - MARCIO DIAS PEREIRA
Interna - 2081596 - ELAINE CRISTINA ALVES DA SILVA
Interna - 1342440 - KYVIA PONTES TEIXEIRA DAS CHAGAS
Externa à Instituição - JOSEFA PATRÍCIA BALDUINO NICOLAU