Influence of luminosity on the initial growth of Carapa guianensis, Clitoria fairchildiana and Inga edulis tree seedlings

Autores

  • Carlos Eduardo Moura-Silva Universidade Estadual de Roraima
  • Poliana Cristina Rodrigues de Andrade Universidade Estadual de Roraima
  • Wenderson Nunes dos Santos Universidade Estadual de Roraima

DOI:

https://doi.org/10.15361/1984-5529.2017v45n4p422-429

Resumo

The success of forest plantations can be improved by understanding the response of plants to different environmental conditions. The objective of this study is to evaluate the growth and leaf characteristics of tree seedlings subjected to different levels of luminosity. The experiment was conducted in nursery conditions, where seedlings of Carapa guianensis, Clitoria fairchildiana and Inga edulis were subjected to the following treatments: T50 = 50% shading, T75 = 75% shading, and SL = sunlight. During 90 days, height, stem diameter (SD), specific leaf area (SLA), chlorophyll content index (CCI) and Fv/Fm ratio were determined. C. fairchildiana showed a greater growth in height and better responses of Fv/Fm in the T75 treatment. I. edulis showed higher values for SLA in all treatments compared to the other species. Both C. fairchildiana and I. edulis presented increases in CCI values in function of time when compared with C. guianensis, which reduced CCI values. Under the evaluated conditions, C. fairchildiana showed a better development, while C. guianensis did not develop well.

Biografia do Autor

Carlos Eduardo Moura-Silva, Universidade Estadual de Roraima

Professor do Departamento de Engenharia Florestal da Unicersidade Estadual de Roraima, campus Rorainópolis, atuando nas áreas de Nutrição Mineral de Plantas, Fisiologia Vegetal e Recuperação de áreas degradadas, com ênfase em Ecofisiologia Vegetal.

Poliana Cristina Rodrigues de Andrade, Universidade Estadual de Roraima

Formada em Engenharia Florestal pela Universidade Estadual de Roraima em 2016, campus de São João da Baliza, RR.

Wenderson Nunes dos Santos, Universidade Estadual de Roraima

Formado em Engenharia Florestal pela Universidade Estadual de Roraima em 2016, campus de São João da Baliza, RR.

Publicado

07/11/2017

Edição

Seção

Silvicultura/Engenharia Florestal - Forestry