EFFECT OF LIGHT, TEMPERATURE AND SCARIFICATION ON THE GERMINATIVE CAPACITY AND INITIAL GROWTH OF Myroxylon balsamum (L.) HARMS

Authors

  • Sophia Loayza Cabezas Faculty of Agricultural Sciences, Universidad Central del Ecuador
  • Dante Arturo Rodriguez-Trejo Forest Science Division, Universidad Autónoma Chapingo, Texcoco
  • Elizabeth Hernández-Acosta Department of Soil, Area of Natural Resources, Universidad Autónoma Chapingo, Texcoco
  • Juan Almaráz Suárez Program of Edaphology, Colegio de Postgraduados, Texcoco

DOI:

https://doi.org/10.1590/1983-21252018v31n218rc

Keywords:

Germinative capacity. Plant quality. Physical dormancy.

Abstract

Myroxylon balsamum is a valuable tropical tree; besides the good quality of its timber it also provides valuable nontimber forest products: balsam and resin. High deforestation rates in the area of distribution and the unregulated extraction of its resin and wood have led M. balsamum to be endangered or threatened. Its regeneration through seeds has been poorly studied, and there are no reports of germination and plasticity under controlled conditions. We evaluated the effect of scarification (longitudinal cut of the fruit and embryo fully exposed) and environmental factors (different levels of light intensities and changing temperatures) on seed germination and the development of seedlings. From the aforementioned, M. balsamum seeds are orthodox and show physical dormancy. In view of these characteristics, M. balsamum can be managed efficiently to initiate conservation programs and restoration in degraded land.

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Author Biographies

Sophia Loayza Cabezas, Faculty of Agricultural Sciences, Universidad Central del Ecuador

Actualidad, docente de cátedra de agroforestería, Universidad Central del Ecuador. Estudios de maestría en Agroforestería para el Desarrollo Sostenible. Universidad Autónoma Chapingo. Estudios de Ingeniería Agronómica. Universidad Central del Ecuador.

Dante Arturo Rodriguez-Trejo, Forest Science Division, Universidad Autónoma Chapingo, Texcoco

Profesor - Investigador en la Universidad Autonoma Chapingo División de Ciencias Forestales

Elizabeth Hernández-Acosta, Department of Soil, Area of Natural Resources, Universidad Autónoma Chapingo, Texcoco

Profesor - Investigador en la Universidad Autonoma Chapingo Area de Recursos Naturales

Juan Almaráz Suárez, Program of Edaphology, Colegio de Postgraduados, Texcoco

Profesor - Investigador Asociado Colegio de Posgraduados, Campus de Montecillo Programa de Edafologia

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Published

06-04-2018

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Section

Forest Science