Establishing Some Qualitative Connections at the Pollen Collected by Bees and Produced by Spontaneous Flora in Different Moments of the Day
| Autor: | Antonina Jivan (Rişcu), Marian Bura, Silvia Pătruică, Alin Jivan |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Scientific Papers Animal Science and Biotechnologies, Vol 44, Iss 2, Pp 263-266 (2011) |
| ISSN: | 2344-4576 1841-9364 |
| Popis: | Based on the bibliographic study it has been observed the fact that poleniferous plants have diverse blooming, depending on the time of the day. Temperature and humidity are climatic factors with a special influence in opening the corolla of a flower and production of pollen for bees. Also, every species has different needs for temperature degrees in order to bloom. The bees start collecting the pollen from the early hours in the morning if the temperature is over 140C, and the collection lasts until the evening. During this activity, the bees visit a large number of flowers, as the blooming of some poleniferous plant species depends very much on the moment of the day. This process is easy to track by watching the entrance of the beehive for the bees that enter loaded with pollen clusters on their legs. If observations start from 8 o’clock it can be seen that around midday the colour of the pollen clusters on bees’ legs change, so that at 12 o’clock none of the bees that were bringing yellow pollen from the dandelion in that moment brings any more pollen from them because the dandelion has closed its corolla and for the bees it no longer represents a poleniferous source at midday. After 12, fructiferous trees are an important source of pollen. The pollen has different qualitative and nutrient properties depending on the plant species nurturing the bees. |
| Databáze: | OpenAIRE |
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