Anatomical foliar differentiation on natural population of Pinus caribaea var. caribaea and Pinus tropicalis in Pinar del Río and Artemisa, Cuba

Authors

  • Gretel Geada-López Departamento de Ciencias Forestales, Facultad de Ciencias Forestales y Agropecuarias, Universidad de Pinar del Río Hermanos Saíz Montes de Oca. Pinar del Río. https://orcid.org/0000-0002-8421-0624
  • Rogelio Sotolongo-Sospedra Departamento de Ciencias Forestales, Facultad de Ciencias Forestales y Agropecuarias, Universidad de Pinar del Río Hermanos Saíz Montes de Oca. Pinar del Río. https://orcid.org/0000-0003-0116-4157
  • Liutmila Pérez del Valle Departamento de Ciencias Forestales, Facultad de Ciencias Forestales y Agropecuarias, Universidad de Pinar del Río Hermanos Saíz Montes de Oca. Pinar del Río. https://orcid.org/0000-0002-1838-4482
  • Caridad Rivera-Calvo Departamento de Ciencias Forestales, Facultad de Ciencias Forestales y Agropecuarias, Universidad de Pinar del Río Hermanos Saíz Montes de Oca. Pinar del Río. https://orcid.org/0000-0002-4474-7144
  • Robert Ramirez-Hernández Departamento de Ciencias Forestales, Facultad de Ciencias Forestales y Agropecuarias, Universidad de Pinar del Río Hermanos Saíz Montes de Oca. Pinar del Río. https://orcid.org/0000-0002-0224-0011
  • Carlos Alberto Miranda-Sierra Centro Meteorológico Provincial Pinar del Río. Pinar del Río. https://orcid.org/0000-0003-2947-2573
  • Irmina Armas-Armas Departamento de Ciencias Forestales, Facultad de Ciencias Forestales y Agropecuarias, Universidad de Pinar del Río Hermanos Saíz Montes de Oca. Pinar del Río. https://orcid.org/0000-0003-3877-2252

Keywords:

needles, adaptation, multivariate analysis, anatomical variation, resin canals

Abstract

Introduction: Variations in needle anatomy can be adaptive responses or interpopulation acclimatization to edaphoclimatic stress, especially of species that develop in extreme environments. Pinus caribaea var. caribaea and Pinus tropicalis are distributed in western Cuba, mainly in the province of Pinar del Río, where they form pure populations or in sympatry.

Objective: To determine the anatomical variation of the needles of both species as a differential adaptive response to environmental conditions determined by lithology, altitude and slope.

Methods: They were sampled between 20 and 30 individuals from all the ecotopes where both taxa grow naturally. The studies are fundamentally based on multivariate statistical analyses.

Results: The analysis used allowed us to differentiate the two taxa from the point of view of their foliar anatomy, both present their own variations to adapt to the same environment. For P. caribaea, the formation of groups is distinguished by the relationship of the anatomical variables, mainly due to the effect of the lithology, and the ones that most contributed to differentiating them were those of water regulation, primary metabolism together with the thickness of the cuticle. In P. tropicalis, the results revealed significant differences between ecotopes, fundamentally with respect to the one located in the quartzite sands with high silica content; the formation of groups is given fundamentally by the effect of the lithology. The variables that most contributed to discriminate between ecotopes were those related to water regulation, number and diameter of resin channels and cuticle thickness.

Conclusions: The availability of water and nutrients in the substrate are the factors that most influence anatomical variation. The results contribute to the local conservation of the taxon since the structure of the anatomical variation is a consequence of the genetic evolution of the populations and they are very important in ecological studies and for silvicultural management.

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Published

2024-03-30

How to Cite

Geada-López, G., Sotolongo-Sospedra, R., Pérez del Valle, L., Rivera-Calvo, C., Ramirez-Hernández, R., Miranda-Sierra, C. A., & Armas-Armas, I. (2024). Anatomical foliar differentiation on natural population of Pinus caribaea var. caribaea and Pinus tropicalis in Pinar del Río and Artemisa, Cuba. Anales De La Academia De Ciencias De Cuba, 14(1), e1495. Retrieved from https://revistaccuba.sld.cu/index.php/revacc/article/view/1495

Issue

Vol. 14 No. 1: January-March 2024

Section

Natural and Exact Sciences

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