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Reproductive biology and pollinators in two enantiostylous Qualea species (Vochysiaceae) in the Brazilian Cerrado.
Plant Biology ( IF 4.2 ) Pub Date : 2020-01-27 , DOI: 10.1111/plb.13091 J M Morais 1 , H N Consolaro 2 , L L Bergamini 3 , V Ferrero 4
中文翻译：
巴西塞拉多（Cerrado）的两种对口食味的Qualea物种（y科）的生殖生物学和传粉媒介。
更新日期：2020-01-27
Plant Biology ( IF 4.2 ) Pub Date : 2020-01-27 , DOI: 10.1111/plb.13091 J M Morais 1 , H N Consolaro 2 , L L Bergamini 3 , V Ferrero 4
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- Enantiostyly is a floral polymorphism in which two floral forms in the same species differ in deflection of the stigma to right or left position. In monomorphic enantiostylous plants, flowers of the two morphs occur within the same individual, usually in the same proportion. In self‐compatible species the function of monomorphic enantiostyly is proposed to increase outcrossing rates and offer a reproductive advantage under pollination limitation. Enantiostylous species are usually self‐compatible and show heteranthery, with poricide anthers and pollen as pollinator reward; however, there are families, such as Vochysiaceae, that have different characteristics.
- We analysed the reproductive system and pollination biology of Qualea parviflora and Q. multiflora, two enantiostylous species from the Brazilian Cerrado that have specific morphological and physiological traits. For this, we characterized flower traits, performed hand pollinations and studied floral visitors.
- We found no differences between morphs in the proportion of flowers, nectar produced or its concentration, pollen quantity and fruit set. Both species were self‐incompatible and quite generalist regarding floral visitors.
- Enantiostyly in self‐incompatible plants seems to confer a reproductive advantage by reducing self‐interference resulting from stigma clogging. This novel result helps to expand our knowledge on this complex floral polymorphism and opens new avenues for future research on this topic.
中文翻译：
巴西塞拉多（Cerrado）的两种对口食味的Qualea物种（y科）的生殖生物学和传粉媒介。
- 对映体是一种花型多态性，其中同一物种中的两个花型在柱头向右或向左的偏斜方面有所不同。在单态对映雌性植物中，两种形态的花通常在同一个体内以相同的比例出现。在自相容物种中，提出了对映体单晶功能，以提高异交率并在授粉限制下提供繁殖优势。对映雌性物种通常具有自我相容性，并具有杂色性，用花药和花粉作为授粉媒介。但是，有些家庭，例如金合欢科，具有不同的特征。
- 我们分析了Qualera parviflora和Q. multiflora的生殖系统和授粉生物学，这两种来自巴西Cerrado的对映雌性物种具有特定的形态和生理特性。为此，我们表征了花卉特征，进行了手工授粉并研究了花卉访客。
- 我们发现，花的比例，花蜜的产生比例，花粉的浓度，花粉量和坐果形态之间没有差异。两种物种都是自相矛盾的，并且在花卉访客方面颇具通才。
- 自相容植物中的对映体似乎通过减少柱头堵塞引起的自我干扰而赋予繁殖优势。这一新颖的结果有助于扩大我们对这种复杂的花卉多态性的认识，并为今后对该主题的研究开辟新的途径。
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