Physical quality of seeds of Moquiniastrum polymorphum.

J C T Faria,C R M Assumpção,G E Brondani,T B Breier,L A Melo,J M R Faria

doi:10.1590/1519-6984.175407

J C T Faria, C R M Assumpção + Show 4 more

Open Access

https://doi.org/10.1590/1519-6984.175407

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Abstract

This study aimed to analyze the physical properties of the seeds of Moquiniastrum polymorphum when processed by mini-SAS, X-ray and seed blower systems. The seeds were purchased from Seeds Caiçara, located in Penápolis-SP. After purchase, the seed lot was characterized by standard tests. In the X-ray test the seeds were classified according to their internal morphology as filled, unfilled or malformed. The seed blower was set at six opening settings, resulting in light and heavy fractions. The evaluations were performed by weighing the seeds that remained in the blower (heavy fraction) and by the amount of filled seeds indicated by the X-ray test. The germination tests were composed of four replicates of 50 seeds. The mini-SAS was used for external evaluation. It was concluded that the combined use of the seed blower and the X-ray test was efficient for the evaluation and determination of the physical quality of the seeds of M. polymorphum. The seed blower at opening settings 5 resulted in the best lot quality. The external parameters were not able to qualitatively evaluate the seeds of M. polymorphum.

Highlights

The reckless forest exploitation from the past decades, combined with tax incentives for agriculture in addition to the growing interest in timber products have led Brazilian native forests to diminish to a large extent (Rego et al, 2009), even though, according to the Brazilian laws concerning environmental protection (Law 9.605, Art. 50-A - Brasil, 1998, Law 12.651, Art. 31 - Brasil, 2012), deforestation of native forests, without license, is considered a crime
This study aimed to analyze the physical properties of the seeds of M. polymorphum when processed by mini-Seed Analysis System (SAS), X-ray and seed blower systems
Due to the low percentage found in the germination test, the radiograph images were used to characterize the internal properties of the seeds, and the mini-SAS system to evaluate the external properties

Summary

Introduction

The reckless forest exploitation from the past decades, combined with tax incentives for agriculture in addition to the growing interest in timber products have led Brazilian native forests to diminish to a large extent (Rego et al, 2009), even though, according to the Brazilian laws concerning environmental protection (Law 9.605, Art. 50-A - Brasil, 1998, Law 12.651, Art. 31 - Brasil, 2012), deforestation of native forests, without license, is considered a crime. The number of native Brazilian forest species with little or no scientific information is still large due to the enormous diversity of species in the ecosystems of the country. Several studies have been published on the botanical and behavioral character of forest species (Carvalho, 2003; Santos et al, 2011; Souza et al, 2010; Lorenzi, 2014)

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