Pollination Ecology of Impatiens section Trimorphopetalum (Balsaminaceae) in Madagascar - Comparison of species with and without nectar reward

马达加斯加凤仙花科 Trimorphopetalum（香脂科）的授粉生态学 - 有花蜜奖励和无花蜜奖励的物种比较

• 批准号: 383680617
• 负责人: Professor Dr. Eberhard Fischer
• 金额: --
• 依托单位: Abteilung Biologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/383680617?language=en
• 关键词: Pollination; Ecology; Impatiens; section; Trimorphopetalum

Madagascar is one of the global diversity centers for Impatiens with more than 260 recognized species. With 125 species a particularly large number, belonging to the section Trimorphopetalum lacks a spur, and some taxa are even cleistogamous. The aim of the project is to study the pollination biology of Impatiens rivularis, a species where already preliminary data were obtained in Madagascar (Masoala peninsula) and in cultivation in the Botanical Garden, and which is supposed to represent a deceptive flower exhibiting brood site deception. Detailed field observation of this taxon and another non-rewarding species (Impatiens silviana) together with observations of two rewarding species from the Impatiens elatostemoides group from the section Trimophopetalum (Impatiens spec. nov. A, I. spec. nov. B) will be carried out in the study site of Mt. Ambohitsitondroina, Masoala during 3 weeks. The potential pollinators will be collected and subsequently identified. Additional data on floral scent, pollen/ovule ratio, nectar production and floral morphology and display will be gathered on plants in cultivation. Brood site deception may be important among the drivers for hyperdiversification of Impatiens in Madagascar, resulting in one of the largest groups of deceptive species in core eudicots.

马达加斯加是凤仙花的全球多样性中心之一，有260多种已知物种。有125种特别多，属于Trimorphopetalum缺乏距的部分，有些分类群甚至是闭花受精的。该项目的目的是研究凤仙花rivularis，一个物种，其中已经获得了初步的数据在马达加斯加（Masoala半岛）和在植物园的栽培，这是应该代表一个欺骗性的花展示育雏网站欺骗的授粉生物学。详细的野外观察了这一分类群和另一个非奖励种（Impatiens silviana），以及来自Trimophopetalum组（Impatiens spec. nov. A，I.规范. nov. B）将在Mt. Ambohitsitondroina，Masoala在3周内。潜在的传粉者将被收集，并随后确定。有关花香、花粉/胚珠比例、花蜜生产和花形态和显示的其他数据将在栽培植物上收集。育雏网站欺骗可能是重要的驱动程序中的高度多样化的凤仙花在马达加斯加，导致在核心真双子叶植物的欺骗性物种的最大群体之一。