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Effect of pollination on seedset and yield of buckwheat (\kur{Fagopyrum esculentum}).
NOLČ, Radek
Common buckwheat is a attracting plant for many pollinators, therefore it be helping to restore biodiversity in the landscape. The most important of pollinators of buc kwheat are honeybee and hoverflies. The aim of this thesis was to find out effect of pollination of buckwheat sown with honeybees and the others pollinators on the seed set and yield of archenes in different varieties of buckwheat. A small-plot field experiment was established with three varieties of common buckwheat in the Pilsen Region, in the place of Zábělá. Before flowering began, half of the plots were covered with insect screens. The buckwheat stand was evaluated from the point of: plants height, number of branches, number of flowers and inflorescences on a plant, nectar volume in Thrum flowers, flowering time, number of archenes on a plant, the weight of thousand of archenes and the yield of archenes. Monitoring of pollinators was performed at the time of buckwheat flowering at 9, 10, 11, 12 and 14 hours, during 10 minutes, using photos. Nectar collection took place on five consecu tive days, from 16. 7. until 20. 7., at 9, 10 and 11 hours. Total of 31 insect species were recorded on buckwheat flowers. The most common effective pollinators of buckwheat were honeybees, (39,7 %) and hoverflies (37,5 %). The significant difference in nectar production was found among the tested buckwheat varieties. The yield of achenes on covered plants was 87 % lower than on freely accessible plants.
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Monitoring of floral visitors and their importance on comon buckwheat
NOLČ, Radek
Common buckwheat is a crop that attracts many pollinators. The most important of these is honeybee. The aim of this bachelor's thesis was to find out what share of honeybee is on the pollination of common buckwheat and what its significance for the yield of archenes at different sowing times. A small-plot field experiment was established in the Pilsen Region, in the place of Zábělá, on three sowing times (1st May, 1st June and 1st July 2019).The buckwheat stand was evaluated from the point of: flowering time, total vegetation time of the stand, number of inflorescences and flowers on a plant, number of archenes on a plant, the weight of thousand of archenes and the yield of archenes. Monitoring of pollinators was performed at the time of buckwheat flowering at 9, 11 and 14 hours, during 10 minutes, using photos. The share of honeybees on the pollination of buckwheat was 29% of effective pollinators. A total of 24 insect species were recorded on buckwheat flowers. The highest number of buckwheat pollinators was recorded in July (21 species). The most common effective pollinator of buckwheat were hoverflies (57%). The most visits of honeybees were recorded at the second sowing time (on 1 June 2019), which also had the highest expected yield.
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Opylování zimolezu modrého (Lonicera caerulea L.)
Vládek, Aleš
The aim of the thesis was to conduct a literature search on cultivation and especially pollination of honeysuckle, by attempting to compare the effect of free pollination with manual self-pollination and manual cross-pollination on fruit yield and study pollinators of Lonicera cearulea L. Therefore, in 2018, pollination and bee diversity were assessed from April to May by 'Sinnaja ptica', 'Gerda' and 'Viola' varieties. The results confirmed honeysuckle insect infestation. Self-pollination and non-pollination did not reach harvest parameters as in the case of free pollination. However, there is an unspecified influence of pollinators on the efficacy of blue honeysuckle pollination since manual foreign pollination has failed to maximize yield. Blooming haskaps prefer long-tongued bees, especially bumblebees and honeybees.
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Apidofauna v podmínkách druhově bohatých porostů genetických zdrojů pro potřeby opylení zelenin a speciálních plodin
Vládek, Aleš
The aim of the bachelor work was perform a literary research on pollination of especially horticultural and other special crops in relation to the influences of the environment that influence the formation of bee comunities. Scientific knowledge pair up with present pollinizing needs for not only horticulture crops and Apoidea populations monitor in genetical resources of plants of Výzkumném ústavu rostlinné výroby and neighbouring control areas in Olomouc. Eight Apoidea monitorigs were made from June to September in 2016. Results have shown a direct dependence between the richness of the flowering plant species and the richness of the bee species and the equally important importance of the nesting site. The cultivation of many entomophilous plants and the good management of the area is supported by the pollination of cultural and wild plants.
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