SUBSTRATES AND TEMPERATURES FOR THE GERMINATION OF SEEDS OF Senegalia tenuifolia (L.) BRITTON & ROSE

Authors

  • Alcimone Maria Silva Araújo Department of Animal Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Liz Carolina da Silva Lagos Cortes Assis Department of Animal Science, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Narjara Walessa Nogueira Department of Plant Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN
  • Rômulo Magno Oliveira de Freitas Campus Valença, Instituto Federal de Educação, Ciência e Tecnologia Baiano, Valença, BA
  • Salvador Barros Torres Department of Plant Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN

DOI:

https://doi.org/10.1590/1983-21252016v29n113rc

Keywords:

Caatinga. Fabaceae. Calumbi.

Abstract

The Rules for Seed Analysis and the Instructions for Seed Analysis of Forest Species have no recommendations for conducting the S. tenuifolia germination test. Therefore, the aim of the present study was to evaluate different temperatures and substrates to perform the germination test of S. tenuifolia seeds. The experimental design was completely randomized in a factorial 4 × 3 design and consisted of four substrates (paper roll; on paper; on sand and on vermiculite) and three temperatures (25, 30 and 35 °C), with four replicates of 25 seeds. The percentage of normal seedlings, the germination speed index, the shoot length, root length and dry mass of seedlings were evaluated. The Tukey test was used at 5% probability. There was a significant interaction between the temperatures and substrates tested for all variables, indicating that there is at least one ideal combination of the two factors that can increase the germination of seeds. The germination and vigor of S. tenuifolia seeds are influenced by the temperature and by the substrate used in the germination test. The combination of the paper roll substrates with a temperature of 25 and 30 °C was suitable for the germination of S. tenuifolia seeds.

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Published

11-03-2016

Issue

Section

Agronomy