This study investigates pollen viability and meiotic behavior of Ochroma pyramidale, suggesting high reproductive success in this species.
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.
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Zanetti et al. (2025) studied this question.
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