Caracterização morfofisiológica de sementes e plântulas de hymenaea sp. através do método manual e digital

Abstract

The application of digital analysis offers great advantages over traditional manual methods due to the shorter time required and precision, in addition to offering a variety of information quickly and with significant numbers. In view of the above, the objective of the present work was the biometric characterization of seeds and seedlings of Hymenaea sp. through manual and digital imaging processes, verifying whether the methodology was efficient in distinguishing the physiological quality of seeds from five parent plants. The fruits were collected from five mother plants located in Mata do Pau Ferro, in the municipality of Areia in Paraíba. After processing the seeds, they were subjected to biometric analysis using the manual method (with the aid of a caliper) and the digital method (based on capturing the image of the seeds and digital analysis using the ImageJ publishing program), being evaluated the length and width, for both methods. In addition, seed weight and water content were determined. To assess the physiological quality, the first emergence count, percentage of emergence, index and average emergence time, length of the aerial part and root system were carried out - using the manual method (using a ruler) and digital method, dry mass of the part aerial and root system. The data obtained were subjected to analysis of variance and the means were compared using the Tukey test at a 5% probability level, subsequently Spearman's correlation was performed for all combinations between variables. Image analysis, with the help of the ImageJ® publishing program, allows evaluating various characteristics of the biometrics of seeds and seedlings of Hymenaea sp. being efficient in ranking batches of seeds from different mother plants, but it still requires studies to recommend the method. The seeds from mother plant 1 are of better quality and are recommended for seedling production.