INTRASPECIFIC DIVERSITY OF GABIROBEIRA (Campomanesia pubescens (DC.) O. BERG) FROM MORPHOANATOMIC DESCRIPTIONS

Authors

  • Angélica de Sousa Pereira Universidade Federal de Jataí
  • Jefferson Fernando Naves Pinto Universidade Federal de Jataí
  • Érica Virgínia Estefane de Jesus Amaral Universidade Federal de Jataí
  • Diego Ismael Rocha Universidade Federal de Viçosa
  • Edésio Fialho dos Reis Universidade Federal de Jataí
  • Vinícius Coelho Kuster Universidade Federal de Jataí

DOI:

https://doi.org/10.31668/agrotec.v13i2.12847

Abstract

The “gabirobeira”, Campomanesia pubescens (DC.) O. Berg. (Myrtaceae), presents structural variations that make it difficult to understand the morphological limits of the species, with already descriptions of different morphotypes (M1 – M3). The current study aimed to compare the leaf morphological and anatomical organization of three morphotypes (M1, M2 and M4) of C. pubescens. Mature leaves were fixed and subjected to usual light microscopy techniques. Micromorphometric evaluations were performed using ImageJ software. The morphotypes show divergent morphological leaf characteristics, such as the color of the abaxial surface of the leaf, occurrence of indumentum and texture. Regarding leaf anatomy, M1 presents continuous hypodermis composed of 2-3 layers, while M2 and M4 have similar sheath extensions, which form a discontinuous subepidermal layer. M4 has amphistomatic leaves, while M1 and M2 are hypostomatic. In the midrib, 1 to 3 vascular bundles occur in M4, whereas in M1 and M2 there are only 1. The margin of M2 is the only one that does not have fibers. In the multivariate analysis, the phloem variable showed the greatest divergence between the morphotypes, with about 73% of variability. The morphotypes have a high interspecific structural distinction, especially in tissue arrangement.

KEYWORDS: Leaf anatomy, intraspecific diversity, sheath extensions, hypodermis.

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Published

2022-12-30

Issue

Vol. 13 No. 2 (2022): Revista Agrotecnologia

Section

Artigos

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