Generative reproduction of long stalked pondweed (Potamogeton praelongus Wulfen) in the laboratory

Prausová, Romana; Sikorová, Pavla; Šafářová, Lenka

doi:10.1016/j.aquabot.2014.09.005

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…All these parameters were selected because of their ability to indicate environmental variability and availability to be measured in all the studied sites (fertile individuals were not found at all localities). To verify a preference of vegetative to generative reproduction, we also counted the number of germinating plants of P. praelongus, the determination of which was based on our knowledge of seed germination stages and plantlet growth from laboratory germination tests (Prausová et al, 2013;Prausová, Sikorová, & Šafářová, 2015).…”

Section: Field Data Collectionmentioning

confidence: 99%

“…Although the reproduction of P. praelongus was not a focus of our study, we observed that the Nordic populations rarely reproduced with achenes. Although achenes of P. praelongus gathered in Czech localities can germinate aer interruption of their dormancy (Prausová et al, 2013;Prausová, Sikorová, & Šafářová, 2015), seed germination success and subsequent growth of the plantlets in natural sites in Central Europe is expected to be relatively low because of low water transparency, threats by herbivores and competitive organisms (algae, mosses, vascular plants, ducks, and fish), and disturbances (such as floods). However, small plantlets that had germinated from seeds were observed in natural localities in Norway (Prausová, Kozelková, Tomášová, Brodský, Havelka, Pitelková, & Hašler, 2017).…”

Section: Morphological Adaptations and Probability Of Generative Reproduction In Relation To Site Conditionsmentioning

confidence: 99%

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Differences in Potamogeton praelongus Morphology and Habitats in Europe

et al. 2021

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One of the most southern European occurrences of Potamogeton praelongus is in the Czech Republic (CR), with only one native population in the Orlice River floodplain in Eastern Bohemia, the only surviving site from 10 Czech localities known 45 years ago. This species is critically endangered in the CR and needs to be actively protected with a rescue program. The number of P. praelongus sites increases along a latitudinal gradient, from Central to North Europe (CR, Poland, Sweden, and Norway), and correlates with improving conditions (water transparency and nutrient content in water) for this species along this gradient. Although differences in site conditions between Central and North Europe were caused by changes in landscape geomorphology and vegetation during the glacial and postglacial eras, presently, anthropogenic impact is primarily observed. The Czech sites for P. praelongus have distinctly lower water depth and transparency, and conversely, higher conductivity, temperature, and shade levels than the Nordic ones. These extreme conditions in most biotopes of this light-demanding and mesotrophic species in the CR result in lower fitness and different morphological parameters in the Czech populations. These changes lead to decreased competitive ability against filamentous algae and more competitive aquatic plant species and increase the impact of animals. The Nordic nonintensively managed landscape provides numerous large, deep lakes, which are optimal for this aquatic species. In the CR, P. praelongus can currently only survive in rivers and their oxbows, but these are heavily influenced by intensive landscape management and fishing. Comparison of the populations and their site conditions in the CR and other European countries showed that all Czech native and artificially established sites are exposed to eutrophication and its consequences, which are the most important factors affecting the survival of P. praelongus .

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Section: Field Data Collectionmentioning

confidence: 99%

Section: Morphological Adaptations and Probability Of Generative Reproduction In Relation To Site Conditionsmentioning

confidence: 99%

Differences in Potamogeton praelongus Morphology and Habitats in Europe

et al. 2021

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“…Germination tests were conducted during 2007-2013 to determine how to use the generative reproductive ability of the plant, which is strongly restricted by dormancy [8,15]. A P. praelongus tissue culture was set up in Ostrava (Czech Republic) and 30 clones are maintained there at present.…”

Section: Introductionmentioning

confidence: 99%