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<p>The Myrtaceae family is the eighth largest family of higher plants, including fruit species native to Brazil with significant commercial potential due to their bioactive and antioxidant properties, such as <i>Eugenia involucrata</i> DC. (Rio Grande cherry) and <i>Eugenia pyriformis</i> Cambess. (uvaia). However, their production chains are under-researched, particularly regarding fruit growth and development. This study aimed to fill this gap by describing the anatomical changes occurring during fruit development in these species, focusing on epicarp and pericarp structures. Fruit samples were collected from an experimental orchard, fixed in FAA solution, and prepared for microscopic analysis. Sections were stained with toluidine blue, and a descriptive analysis was conducted at various developmental stages. The study revealed that both species produce simple, fleshy, indehiscent fruits. <i>E</i>. <i>involucrata</i> fruits are smooth and wine-red when ripe, while <i>E</i>. <i>pyriformis</i> fruits are yellow and trichome-covered in early stages, losing their trichomes as they mature. Both species exhibited significant phenolic content during fruit development. The findings show that <i>E</i>. <i>involucrata</i> and <i>E</i>. <i>pyriformis</i> share anatomical traits common to other Myrtaceae species, such as secretory cavities, vascular bundles, and crystal accumulation. Moreover, this study is the first to report the presence of stomata on the outer ovarian epidermis and endocarp of <i>E. involucrata</i> mature fruits. The intense formation of intercellular spaces during fruit development contributes to their poor postharvest storage. However, these anatomical traits suggest a potential positive response to calcium application, which may help extend postharvest longevity. These results provide valuable anatomical insights that can guide future studies on the commercial and agronomic potential of these species.</p>

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Anatomical traits of epicarp and pericarp in Eugenia involucrata and Eugenia pyriformis: potential implications for postharvest behavior

  • 期刊论文

  • 发表日期：

    2025年5月14日

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  • Marcelo Almeida de Oliveira Junior,
  • Bruna do Amaral Brogio Colli,
  • Liliane Cristina Libório Stipp,
  • Sandra Maria Carmello-Guerreiro,
  • Simone Rodrigues da Silva,
  • Francisco de Assis Alves Mourão Filho

摘要

The Myrtaceae family is the eighth largest family of higher plants, including fruit species native to Brazil with significant commercial potential due to their bioactive and antioxidant properties, such as Eugenia involucrata DC. (Rio Grande cherry) and Eugenia pyriformis Cambess. (uvaia). However, their production chains are under-researched, particularly regarding fruit growth and development. This study aimed to fill this gap by describing the anatomical changes occurring during fruit development in these species, focusing on epicarp and pericarp structures. Fruit samples were collected from an experimental orchard, fixed in FAA solution, and prepared for microscopic analysis. Sections were stained with toluidine blue, and a descriptive analysis was conducted at various developmental stages. The study revealed that both species produce simple, fleshy, indehiscent fruits. E. involucrata fruits are smooth and wine-red when ripe, while E. pyriformis fruits are yellow and trichome-covered in early stages, losing their trichomes as they mature. Both species exhibited significant phenolic content during fruit development. The findings show that E. involucrata and E. pyriformis share anatomical traits common to other Myrtaceae species, such as secretory cavities, vascular bundles, and crystal accumulation. Moreover, this study is the first to report the presence of stomata on the outer ovarian epidermis and endocarp of E. involucrata mature fruits. The intense formation of intercellular spaces during fruit development contributes to their poor postharvest storage. However, these anatomical traits suggest a potential positive response to calcium application, which may help extend postharvest longevity. These results provide valuable anatomical insights that can guide future studies on the commercial and agronomic potential of these species.