Banca de QUALIFICAÇÃO: JACKSON ARAÚJO SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : JACKSON ARAÚJO SILVA
DATE: 12/12/2019
TIME: 09:30
LOCAL: Auditório da Direção da EAJ
TITLE:

ANALYSIS OF SEEDS OF Senna siamea THROUGH DIGITAL IMAGE PROCESSING

KEY WORDS:

germination, image analysis automation, X-ray.

PAGES: 48
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Silvicultura
SPECIALTY: Sementes Florestais
SUMMARY:

Seed quality is one of the parameters of great importance among the criteria of establishment and establishment of a species. Thus, the determination of seed quality in a non-destructive and fast way, which is the case of X-ray, shows benefits in the seed industry, especially in the process of decision making during the separation of the lots according to their quality. Although efficient, the tools used need to be improved for better data processing, thereby strengthening the reliability and repeatability of the test. The objective of this study was to suggest a high-performance morphometric methodology using free tools in the processing of X-ray images of Senna siamea is seeds, that is, correlating the parameters of the physiological quality of the seeds, as well as the adequacy of methodologies for the analysis of seedlings. Two experiments were conducted. In both, five lots of S. siamea were used, and in the first experiment, ImageJ®, which is free software, was used to measure both seeds and seedlings, correlating with the traditional tests and thus evaluating the potential of physiological quality. In the second experiment, the reliability of a new software, developed for automated processing of the radiographed images, was evaluated without the use of subjective evaluations, correlating the data in order to identify relationships with the traditional tests. For the conventional criteria, as soon as the seeds were radiographed, they were subjected to the germination test, from which the variables related to the physiological quality were obtained. The obtained data were submitted to ANOVA, when significant, the averages were compared by the Tukey test (p≤0.05). Subsequently, Pearson's simple correlation coefficients (r) were calculated for all combinations between the physiological and physical quality evaluation tests of the seeds. Among the results, it was observed that the X-ray technique in the evaluation of seeds of S. siamea, demonstrated efficacy in the identification of damages, showing a relationship between the X-ray test and that of the physiological potential. Besides, it was possible to differentiate of batches from the analysis of seedlings images, being able to associate the relationship between this test as the image analysis of the radiographed seeds.

BANKING MEMBERS:
Externa ao Programa - 1575330 - CASSIA REGINA DE ALMEIDA MORAES
Presidente - 1880265 - MARCIO DIAS PEREIRA
Interno - 1721230 - MAURO VASCONCELOS PACHECO