NECTAR  PRODUCTION  IN  SEVERAL  Campanula  SPECIES (CAMPANULACEAE)

Strzałkowska-Abramek, Monika; Jachuła, Jacek; Wrzesień, Małgorzata; Bożek, Małgorzata; Dąbrowska, Agnieszka; Denisow, Bożena

doi:10.24326/asphc.2018.3.13

Cited by 4 publications

(5 citation statements)

References 24 publications

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“…In this study, the significant disparities in nectar and sugar production were noted between the cultivars. The variability in the nectar/ sugar amount produced in the flowers had been previously reported in many studies and related to the differences between species, cultivars, or even among individual flowers (Denisow et al, 2014a;Bożek et al, 2015;Strzałkowska-Abramek et al, 2018). P. serrulata 'Kanzan' and P. serrulata 'Amanogawa' differed in flower types, which, no doubt, impacted the quantity of the floral reward offered.…”

Section: Discussionmentioning

confidence: 73%

“…As a major energetic food for pollinators, nectar plays an important ecological role in establishing plant-insect interactions (Strzałkowska-Abramek et al, 2016bNepi et al, 2018). Nectar traits (volume, sugar proportion, sugar concentration) vary considerably between species (Bożek et al, 2015;Strzałkowska-Abramek et al, 2018). Also environmental conditions impact considerably on nectar production and the sugar concentration (Petanidou and Smets, 1996;Nicolson and Thornburg, 2007;Denisow et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Nectar and pollen production in ornamental cultivars of Prunus serrulata (Rosaceae)

Strzałkowska-Abramek

2019

Folia Horticulturae

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Planting ornamental species can help to create pollinator-friendly habitats. In the present study the flowering phenology and floral reward (nectar and pollen) in two cultivars of Prunus serrulata (‘Kanzan’ and ‘Amanogawa’) were evaluated in 2014-2015 in the city of Lublin (south-east Poland). On average, the onset of flowering of P. serrulata occurred in the first ten days of April (‘Kanzan’) or at the end of April (‘Amanogawa’), and lasted 8-17 days. In each year of the study, P. serrulata ‘Kanzan’ started flowering 11-18 days earlier than P. serrulata ‘Amanogawa’. The double flowers of P. serrulata ‘Kanzan’ offered only tiny amounts of nectar and pollen. The total mass of sugars was 0.59 mg per flower and that of pollen 0.08 mg per flower. The semi-double flowers of P. serrulata ‘Amanogawa’ produced 4.5 mg of sugars per flower and 0.17 mg of pollen per flower. The frequency of pollinator visits to flowers was low in P. serrulata ‘Amanogawa’ and very low in P. serrulata ‘Kanzan’. Therefore, if pollinator-friendly arrangements are made in urban areas, these cultivars should not be planted.

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Section: Discussionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Nectar and pollen production in ornamental cultivars of Prunus serrulata (Rosaceae)

Strzałkowska-Abramek

2019

Folia Horticulturae

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“…Melliferous plants were introduced by Milecka et al [53] in the manor complex in Chociw (central Poland). The introduction of melliferous plants yields a strong visual effect, and appropriate species can be a reward base for insect pollinators [54][55][56][57][58][59], as recommended by the national pollinator strategy [60]. To supplement the pollinators food base of protected areas such the Felin Park, it is recommended that a "bee garden" with herbaceous reward plants (e.g., Brassica napus L. var.…”

Section: Discussionmentioning

confidence: 99%

Historical gardens and their potential use for proecological development of urban green space, as illustrated by Felin Manor Park in Lublin, Poland

2019

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Historical urban parks are particularly valuable in terms of their ecology, as they offer habitats to many valuable flora and fauna. A study was conducted in Felin Manor Park, Lublin, southeastern Poland, dating back to the end of the nineteenth and the first half of twentieth century. The aim of the study was to assess the suitability of this type of urban park for the proecological design of urban green areas that will comply with the legal requirements for historic gardens. The investigation demonstrate that long-living native tree species (e.g., Tilia cordata, Quercus robur, and Fraxinus excelsior) are the best preserved plants in this park. The dendroflora of the park is, however, characterized by a great variety of species flowering between early spring and fall. These reward species ensure continuity of the food base for insects throughout the vegetation season. A floristic inventory facilitated development of a concept for the restoration of the park combining cultural (historical, educational) and ecological functions. Tilia cordata was used for line planting arrangements along the park boundary. It is a component of the alley design along the driveway and is one of the most valuable nectar reward species. The survey allowed the definition of future design guidelines, i.e., the preservation of the historical park structures (formed by long-living native species) and complementation of the park dendroflora with species that are attractive for bees and other insect pollinators. To supplement their food base, it is recommended that a “bee garden” with herbaceous reward plants should be created.

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“…The plants flower from June to August. The flowering stems are up to 70 cm high and bear on average 20-30 (up to 190) violetblue protandrous flowers arranged in clusters, which produce nectar (Denisow and Wrzesień, 2015;Strzałkowska-Abramek et al, 2018;Godefroid and Van Rossum, unpublished data). The species is characterized by a self-incompatible breeding system (Gadella, 1964).…”

Section: Study Speciesmentioning

confidence: 99%

“…These findings suggest extensive contemporary pollen flow within populations. Flowers of C. glomerata represent an important resource in nectar and pollen for many insects and so attract a variety of pollinators, such as bumble bees, solitary bees, honey bees and hoverflies (Albrecht et al, 2007;Denisow and Wrzesień, 2015;Strzałkowska-Abramek et al, 2018), which may favor extensive pollen flow across the whole population (Ghazoul, 2005;Van Rossum, 2010;DiLeo et al, 2018). High multiple paternity was also found in an isolated, but large population of the self-incompatible Arabidopsis halleri, with only 4% of offspring sharing the same father (Llaurens et al, 2008), while a value of 20% was found in a population of 96 flowering plants of the self-incompatible Centaurea corymbosa (Hardy et al, 2004).…”

Section: Extensive Contemporary Pollen Flow Within Populations But Li...mentioning

confidence: 99%

Assessing Population Genetic Status for Designing Plant Translocations

Rossum

Pajolec

Raspé

et al. 2022

Front. Conserv. Sci.

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Assisted gene flow interventions such as plant translocations are valuable complementary techniques to habitat restoration. Bringing new genetic variants can contribute to increasing genetic diversity and evolutionary resilience, counteract inbreeding depression and improve plant fitness through heterosis. Large, highly genetically variable populations are usually recommended as sources for translocation. Unfortunately, many critically endangered species only occur as small populations, which are expected to show low genetic variation, high inbreeding level, paucity of compatible mates in self-incompatible species, and increased genetic divergence. Therefore, assessment of population genetic status is required for an appropriate choice of the source populations. In this paper, we exemplify the different analyses relevant for genetic evaluation of populations combining both molecular (plastid and nuclear) markers and fitness-related quantitative traits. We assessed the genetic status of the adult generation and their seed progeny (the potential translocation founders) of small populations of Campanula glomerata (Campanulaceae), a self-incompatible insect-pollinated herbaceous species critically endangered in Belgium. Only a few small populations remain, so that the species has been part of a restoration project of calcareous grasslands implementing plant translocations. In particular, we estimated genetic diversity, inbreeding levels, genetic structure in adults and their seed progeny, recent bottlenecks, clonal extent in adults, contemporary gene flow, effective population size (Ne), and parentage, sibship and seed progeny fitness variation. Small populations of C. glomerata presented high genetic diversity, and extensive contemporary pollen flow within populations, with multiple parentage among seed progenies, and so could be good seed source candidates for translocations. As populations are differentiated from each other, mixing the sources will not only optimize the number of variants and of compatible mates in translocated populations, but also representativeness of species regional genetic diversity. Genetic diversity is no immediate threat to population persistence, but small Ne, restricted among-population gene flow, and evidence of processes leading to genetic erosion, inbreeding and inbreeding depression in the seed progeny require management measures to counteract these trends and stochastic vulnerability. Habitat restoration facilitating recruitment, flowering and pollination, reconnecting populations by biological corridors or stepping stones, and creating new populations through translocations in protected areas are particularly recommended.

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NECTAR PRODUCTION IN SEVERAL Campanula SPECIES (CAMPANULACEAE)

Cited by 4 publications

References 24 publications

Nectar and pollen production in ornamental cultivars of Prunus serrulata (Rosaceae)

Nectar and pollen production in ornamental cultivars of Prunus serrulata (Rosaceae)

Historical gardens and their potential use for proecological development of urban green space, as illustrated by Felin Manor Park in Lublin, Poland

Assessing Population Genetic Status for Designing Plant Translocations

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