Decorative sterile flowers in nine Japanese species of Viburnum (Adoxaceae) and their influence on pollinator visits
Decorative sterile flowers in nine Japanese species of Viburnum (Adoxaceae) and their influence on pollinator visits
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九种日本荚莲属植物（Adoxaceae）的装饰性不育花及其对传粉媒介访问的影响
DOI：
10.1111/1442-1984.12347
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发表时间：
2021
影响因子：
1.4
通讯作者：
Wong Sato A. A. & Kato M.
中科院分区：
文献类型：
--
作者：
齊藤 恭紀、三谷-上野 奈見季、斉藤 圭亮、松木 謙悟 、Huang Sheng;Yang Lingli、山地 直樹、石北 央、沈 建仁、馬 建鋒 、菅 倫寛;Wong Sato A. A. & Kato M.
框架花序是一种独特的排列方式，其中一簇小的可育花被几个较大的装饰性不育花包围。荚属（琼花科）物种的花序排列各不相同;有些物种显示框架花序，而另一些则没有。我们假设装饰花增加了花序吸引传粉者的功能;正如以前的研究所证明的那样，它们还起到了传粉者着陆点的作用。为了验证我们的假设，现场操作实验进行了nineViburnumspecies，三个固有的框架花序和六个没有他们：不育花被删除，并安装在物种和没有框架花序，分别。结果表明，花序与装饰花有较高的访问率比花序没有他们，和昆虫花游客没有表现出任何花类型的着陆偏好。这些结果表明，装饰花只出现在一个子集ofViburnum物种，以增加他们的授粉机会，主要是，提高花序的吸引力。没有框架花序的物种很可能使用其他吸引力增强机制，例如在一簇可育花内的高度开花同步性，这是大多数研究的没有装饰花的物种中发现的特征。
Framed inflorescences are unique arrangements in which a cluster of small fertile flowers is surrounded by several larger, decorative sterile flowers.Viburnum(Adoxaceae) species vary in their inflorescence arrangements; some species exhibit framed inflorescences, whereas others do not. We hypothesize that the decorative flowers increase the pollinator‐attracting functions of the inflorescences; as proved by previous studies, they additionally function as landing‐sites for pollinators. To test our hypotheses, field manipulation experiments were carried out for nineViburnumspecies, three with inherently framed inflorescences and six without them: sterile flowers were removed and mounted on species with and without framed inflorescences, respectively. Results show that inflorescences with decorative flowers had higher visit rates than inflorescences without them, and that insect flower visitors did not show landing preference for either flower type. These results suggest that decorative flowers appeared only in a subset ofViburnumspecies to increase their pollination chances by, mainly, enhancing the attractiveness of the inflorescence. It is likely that species without framed inflorescences use other attraction‐enhancing mechanisms, such as a high flowering synchrony within a single cluster of fertile flowers, a trait found in most studied species without decorative flowers.