Análise de imagens na avaliação da morfologia interna e do vigor de sementes de Brachiaria brizantha cv. Xaraés.

Abstract

The objective of this study was to study an internal morphology of seeds of Brachiaria brizantha cv. Xaraés, through the analysis of radiographic images and associate it with the physiological potential. The internal morphology of the lots of three lots was studied, as were the X-ray tests and were submitted to the germination test, with evaluation seven days after the installation of the test. The radiographic images were analyzed with the ImageJ software, being used in relation to the embryo and endosperm area in relation to a total area of the seed. The seeds were classified into four classes according to the internal capacity of endosperm and embryo. Afterwards the germination test was performed, and on the seventh day as seedlings were scanned for length measurement. Then it was evaluated simultaneously as radiographic images and as computerized images of seedlings. The experimental design was completely randomized. The data were analyzed by means of the variance and the means comparison by means of the Tukey test at the 5% probability level. It is concluded that the analysis of images by means of the X-ray technique can be considered an internal morphology of the seeds of Brachiaria. This is a separating the species of morphological levels of physiological potential.