作为对花粉去除的反应,花气味的变化在杂受粉的Solanum中很罕见
C Douglas Moore1, Dudley I Farman2, Tiina Särkinen3
1Biological and Environmental Sciences, University of Stirling, Stirling, FK9 4LA, UK. c.d.moore@stir.ac.uk.
Planta
|June 3, 2024
概括
杂授粉的Solanum花很少使用香味作为授粉者诚实的信号. 排花粉只在七种物种中只在一种物种中改变了花朵的气味,表明气味不能可靠地表明花粉的存在.
科学领域:
- 植物与授粉者的相互作用
- 化学生态化学生态学
- 进化生物学是进化的生物学.
背景情况:
- 花香在授粉者吸引力和行为中起着至关重要的作用.
- 在杂授粉的花朵中,花粉通常在视觉上被隐藏,使香味成为潜在的重要提示.
- 花香的可靠性作为一个指标,在杂授粉物种的花粉的可用性在很大程度上是未知的.
研究的目的:
- 调查粉粉去除是否影响七种杂授粉的Solanum种群的花香成分和排放率.
- 为了确定花香是否可以作为这些物种中授粉者对花粉的可用性的诚实信号.
主要方法:
- 研究了七种杂授粉的Solanum (Solanaceae) 的种群.
- 在去除花粉后,分析了花香成分和排放率的变化.
- 在去除花粉之前和之后比较香味配置,以评估信号诚实.
主要成果:
- 消除花粉显著降低了S. lumholtzianum的整体花香排放和特定化合物 (linalool,farnesol) 的排放.
- 在其他六种研究的种群中,花粉去除并没有导致花香味成分或排放的显著变化.
- 这表明在研究的物种中,花粉存在与气味信号之间缺乏一致的关联.
结论:
- 鲜花的气味不太可能成为大多数杂授粉的Solanum物种中授粉者的一贯诚实的线索.
- 只有*S. lumholtzianum*对去除花粉产生了嗅觉反应,这表明嗅觉作为可靠的花粉可用性指标的使用有限.
- 授粉者在从这些视觉上相似的,隐藏花粉的花朵中获取食物时,可能会依赖其他线索或策略.
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