X-ray test to evaluate the physiological potencial of Platypodium elegans Vog. Seeds (Fabaceae)

Abstract

The objective of this work was to evaluate the internal morphology of Platypodium elegans Vog. seeds through the X-ray tests and to verify their relation with germination. 200 radiographic images were taken of each group and the tests were taken with the seeds set at 28.0 cm from the source of x-rays. Next, the seeds were classified according to their internal morphology as seen in the radiographic images. Three categories of seeds were established: full, empty and partially full. For each seed category, germination tests were performed. Statistical design in factorial 3x3, with three groups and three categories. From the results obtained in this work, the use of x-ray test with Platypodium elegans Vog. seeds is promising in quality of seed groups detection, assisting in empty and partially full seeds separation, invalidating their immediate use or storage. The x-ray test, in 26 kV for 1.2 seconds intensity was efficient in Platypodium elegans Vog. internal morpholy evaluation. There is a relationship between the internal morphology of seeds and the results of the germination test. The importance of a methodology of easy implementation, aiming at estimating the germinative power of the groups of seeds, was proved by the x-ray tests in seeds of Platypodium elegans Vog. and can also be used for the analysis of the internal morphology of other forest species.

ASSESSMENT OF THE PHYSICAL AND PHYSIOLOGICAL QUALITY OF Piptadenia gonoacantha SEEDS (MART.) J. F. MACBR. USING IMAGE ANALYSIS

“…In addition, when the damage was located in the embryonic axis, higher were the deleterious eff ects on the physiological quality seeds, reducing germination capacity and the formation of normal seedlings by up to 100%. These results are similar to those observed in seeds of Terminalia argentea (Gomes et al, 2014) and Platypodium elegans (Gomes et al, 2016), where the germinative percentage of these species was compromised by the presence of malformed tissues and embryos. In a similar way, it was observed that X-ray system is effi cient for assessing physical quality of Moquiniastrum polymorphum seeds (Faria et al, 2019).…”

“…Studies with radiographic images of seeds and automated analysis of seedlings have been shown to be effi cient in identifying and determining several physical and physiological descriptors in seeds of forest species, such as Terminalia argentea (Gomes et al, 2014), Platypodium elegans (Gomes et al, 2016), Moringa oleifera (Noronha et al, 2018), Leucaena leucocephala (Medeiros et al, 2018;Medeiros et al, 2019), Moquiniastrum polymorphum (Faria et al, 2019) and others. Seed viability is not compromised when subjected to X-ray analysis, due to the low radiation intensity to which the seeds are exposed.…”

Physiological Quality of Stored Dipteryx alata Vogel Seeds: Tetrazolium Test and Radiographic Imaging Standardization

“…Effect similar to this fact, was reported by Pupim et al (2008) in which fully formed embaúba seeds do not generate seedlings due to contamination and physiological deterioration. Still, Gomes et al (2016) when evaluating radiographic images of Platypodium elegans Vog. verified that "full" seeds, that is, with all the internal structures necessary for seedling development, accounted for between 60 and 72% germination.…”