Seed Analysis and Seedling Production of Matayba elaeagnoides Radlk

Daniele Rorato,Patrícia Mieth,Maristela Araujo,Adriana Dutra,Luciane Tabaldi,Felipe Turchetto

doi:10.1590/2179-8087.004316

Abstract

The objective of this study was to evaluate the germination potential of Matayba elaeagnoides seeds, identifying the best substrate for laboratory analysis and to determine seedling emergence and growth under different shade levels in the nursery. Different substrates (paper roll, between and on blotting paper, and on sand or vermiculite) were evaluated in the germination test and different shade levels (0, 30, 50 and 75%) were tested in the nursery. No differences were found between the substrates for seed germination, however, the highest germination percentage was observed when using paper roll (70%). The 30, 50 and 75% shading intensities positively influenced Matayba elaegnoides seedling emergence, however, the best performance in nursery growth was observed under 75% shade presenting seedlings with better standard and quality.

Highlights

AND OBJECTIVESField studies for seed technology follow the recommendations found in the Rules for Seed Analysis (Regras para Análise de Sementes - RAS), which primarily include species of agronomic interest, but containing little information for native forest species (Brasil, 2009)
Lorenzi (2002) described 3.250 kg-1 seeds for the same species, demonstrating morphological variation in the seeds of this species. This can be justified by the edaphoclimatic variations existing in the different physiographic regions where the seeds can be collected, which results in morphological differences
Seed Analysis and Seedling Production... 5/9 in the Instruction for the Analysis of Matayba guianensis seeds, paper roll (PR) is recommended for the germination test (Brasil, 2013)

Summary

Introduction

Field studies for seed technology follow the recommendations found in the Rules for Seed Analysis (Regras para Análise de Sementes - RAS), which primarily include species of agronomic interest, but containing little information for native forest species (Brasil, 2009) In this context, standardization regarding the germination of some forest species in the southern region of Brazil was proposed by Wielewicki et al (2006). Germination will only occur under adequate moisture (water availability), temperature and oxygen conditions (Marcos, 2005; Carvalho & Nakagawa, 2012) Understanding these factors is extremely important as it allows them to be controlled and managed to optimize the percentage, speed and uniformity of germination, thereby allowing us to determine the actual performance of the lot, as well as to provide information to standardize these tests for forest species (Nassif et al, 1998)

Objectives

Methods

Results

Conclusion