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

马达加斯加是凤仙花的全球多样性中心之一，有260多个已知物种。有125种，数量特别多，属于三花瓣组，缺乏距，有些分类群甚至是闭花授粉的。该项目的目的是研究凤仙花的授粉生物学，该物种已经在马达加斯加(Masoala半岛)和植物园的栽培中获得了初步数据，并被认为是一种欺骗性的花，展示了孵化地点的欺骗。对该分类群和另一非奖励种(凤仙花)的详细野外观察，以及来自Trimopetalum(凤仙花规范)组的两个奖励种的观察。11月A、I、SPEC。11月B)将在Mt.在3周内，Masoala，Ambohitsitondroina。潜在的传粉者将被收集并随后进行鉴定。关于花香、花粉/胚珠比例、花蜜产生以及花的形态和展示的更多数据将被收集在栽培植物上。孵化地点的欺骗可能是马达加斯加凤仙花过度多样化的重要驱动因素，导致核心凤仙花中最大的欺骗性物种之一。

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.