Viability and meiotic index of Ochroma pyramidale from the Brazilian Amazon

Authors

  • Géssica Tais Zanetti
  • Ana Aparecida Bandini Rossi
  • Kelli Évelin Müller Zortéa
  • Joameson Antunes Lima
  • Maurecilne Lemes da Silva
  • Maurel Behling
  • Eulalia Soler Sobreira Hoogerheide

Abstract

Ochroma pyramidale is a neotropical tree species native to Central and South America, occurring naturally in the Brazilian Amazon and cultivated in the Mato Grosso state, Brazil, where it is used for timber production and ecological restoration. This study aimed to investigate the pollen viability and meiotic behaviour of O. pyramidale (Cav. ex Lam.) Urb., factors that directly influence the species’ reproductive success. Flower buds at various developmental stages were collected from six individuals to assess the pollen grain morphology, pollen viability and meiotic index. The pollen viability (mean values of 96.16 and 97.72 %, using acetocarmine and the Alexander’s stain, respectively) and meiotic index (average of 96.53 %) were high across all individuals, presenting regularity and stability in the meiosis process.

KEYWORDS: Balsa wood, pollen grains, meiotic stability.

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Published

2025-08-08

How to Cite

ZANETTI, Géssica Tais; ROSSI, Ana Aparecida Bandini; ZORTÉA, Kelli Évelin Müller; LIMA, Joameson Antunes; SILVA, Maurecilne Lemes da; BEHLING, Maurel; HOOGERHEIDE, Eulalia Soler Sobreira. Viability and meiotic index of Ochroma pyramidale from the Brazilian Amazon. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, p. e82152, 2025. Disponível em: https://revistas.ufg.br/pat/article/view/82152. Acesso em: 5 dec. 2025.

Issue

v. 55 (2025)

Section

Research Article

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