Botany, Ahead of Print.
Secretory structures that produce floral rewards have rarely been reported for Annonaceae. We identified a glandular region in Xylopia aromatica (Lam.) Mart., which consisted of a nectary and an elaiophore. This study aimed to describe the structure and secretory process of these glandular structures, which are highly correlated with the reproductive biology of this species. Anatomical and ultrastructural studies were performed prior to and during anthesis, focusing on the channel and pollination chamber. The floral nectary is placed in the roof of the chamber. It has a secretory epidermis and subglandular parenchyma and is immediately contiguous with the elaiophore, a portion that delimits the pollination channel and produces lipids. The release of nectar begins in the pistillate phase, while the elaiophore starts secreting prior to anthesis, both of which finishing during the staminate phase. Lipids form a sticky layer covering the channel surface, which provides access to the chamber. The cell machinery of the epidermis for both nectary and elaiophore is highly correlated with the exudates, despite their highly similar structure. Nectar attracts pollinators to the pollination chamber, whereas lipids seem to act in pollen adhesion to the body of pollinators. Both of exudates appear to act in complementary ways during pollination.

中文翻译：

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蜜腺和e虫在芳香木兰（Annonaceae）的花中共同起作用：结构表明在授粉中的作用

植物学，提前印刷。
产生花香的分泌结构鲜有报道。我们在Xylopia aromaa（Lam。）Mart。中发现了一个腺体区域，该区域由蜜腺和and虫组成。本研究旨在描述这些腺结构的结构和分泌过程，这些结构与该物种的生殖生物学高度相关。在花期之前和期间进行了解剖和超微结构研究，重点是通道和授粉室。花蜜被放置在房间的屋顶。它具有分泌性表皮和腺下实质，并立即与弹性体邻接，该弹性体界定了授粉通道并产生脂质。花蜜的释放从雌蕊期开始，而lai子在花期之前开始分泌，两者均在终结阶段完成。脂质形成覆盖通道表面的粘性层，该粘性层提供了进入腔室的通道。尽管它们的结构极为相似，但对于蜜腺和弹性体而言，表皮的细胞机制与分泌液高度相关。花蜜将授粉媒介吸引到授粉室，而脂质似乎以花粉粘附在授粉媒介的体内起作用。两种分泌物在授粉过程中似乎起互补作用。而脂质似乎在花粉对授粉媒介的粘附中起作用。两种分泌物在授粉过程中似乎起互补作用。而脂质似乎在花粉对授粉媒介的粘附中起作用。两种分泌物在授粉过程中似乎起互补作用。