Suomalaisen hunajan ominaisuuksista ja alkuperästä

Martimo, Erik

doi:10.23986/afsci.71178

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…The frequency percentage of Rubus spp. was higher and its proportion in the honey samples was markedly higher than in the earlier pollen studies conducted in Finland (Martimo, 1945;Aarnio, 1961;Varis et al, 1982;Varis, 2000). This could be explained by three factors.…”

Section: Discussioncontrasting

confidence: 71%

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Pollen analyses of honey from Finland

Salonen

Ollikka

Grönlund

et al. 2009

Grana

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The present study reports results of qualitative melissopalynological analyses of Finnish honey between the years 2000-2007 and changes in its pollen content from the period 1960-2007. Altogether the pollen content of 734 honey samples was analysed with an average of 415 pollen grains counted from a sample. Pollen of Trifolium repens type, Rubus spp., Salix spp. and the Brassicaceae family were present in more than 90% of the samples, and these pollen types were also found in the highest proportions. Annual variation in the relative amounts of the most numerous pollen types could be as high as 10%. On the basis of the pollen spectra of the honey samples, four regions of forage plants for bees could be identified in Finland. In the period between 1960 and 2007, the most marked change observed was that the percentage of the Trifolium spp. pollen type had decreased from 70% to 10%, while the proportions of Brassicaceae and Rosaceae pollen types showed a corresponding increase.

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Section: Discussioncontrasting

confidence: 71%

“…Results of honey pollen analyses are available from as early as 1937 and 1960 (Martimo, 1945 andAarnio, 1961, respectively). These studies indicated that the proportion of Trifolium repens type pollen was about 50%.…”

mentioning

confidence: 99%

Pollen analyses of honey from Finland

Salonen

Ollikka

Grönlund

et al. 2009

Grana

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“…In the 1930s there were no special seed production Observations from 1937 by Martimo (1945), from 1960 by Aario (1961), from 1962and 1963, from 1977 and 1978 by Varis et al (1982), and from 1997 (this study). Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…by far the most common pollen type was Trifolium repens pollen. It was represented in all samples, and its percentage in half of the samples was as much as 85-100% (Martimo 1945). White clover was grown especially in pastures, often together with other clovers.…”

Section: Resultsmentioning

confidence: 99%

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Influence of changes in crop cultivation areas on pollen contents of honey (Research Note)

Varis¹

2000

AFSci

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Pollen counts were done on honey collected by a Finnish honey corporation in late summer 1997 from the entire beekeeping area of Finland. The most common pollen type was Brassicaceae pollen, which was represented by 60% of the grains counted. It was followed by Salix spp. (10%), Trifolium repens + T. hybridum (10%) and T. pratense + T. medium (6.5%) species. Pollen grains of Phacelia spp, Filipendula ulmaria, Apiaceae, Sorbus aucuparia, Malus domestica, and Rubus idaeus were also numerous. These pollen types constituted 96% of all the pollen examined.These results and those of the earlier pollen counts in Finland were compared with the cultivation areas of the most important nectariferous crops. In the 1930s white clover was the most important honey source in Finland and its pollen was very dominant in honey. Since the 1950s oilseed crops have been grown in increasing rates and pure timothy-meadow fescue pastures and hay stands with heavy N applications have decreased the share of Trifolium species. The proportion of Brassicaceae pollen has continuously increased with the increase of the growing area of turnip rape Brassica rapa ssp. oleifera and rape, B. napus ssp. oleifera. At the same time the proportion of T. repens + T. hybridum pollen has decreased so that their mutual relationships are now reversed compared to the beginning of the 1960s. Changes in land use were thus very clearly to be seen in the pollen content of honey.

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Pollen spectrum of Finnish honey

Varis

Helenius

Koivulehto

1982

AFSci

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Pollen spectra were analysed on 160 honey samples representing the whole beekeeping area of Finland in the years 1977 and 1978. A semi-quantitative method of pollen analysis based online counts was developed. It was found efficient for determining the relative numbers of pollen grains in the honey samples. On average, ca. 16 pollen types were identified per sample. The number of honeydew elements was low in all samples. Brassicaceae pollen was the dominant type. The other most frequent and abundant types were pollen grains of Trifolium repens + T. hybridum, Salix spp., "the Rosaceae group” (Prunus, Malus, Sorbus spp.), Apiaceae, and Filipendula ulmaria. These pollen types constituted 90.8 % (1977) and 90.3 % (1978) of all the pollen examined. Between 1960—1963 and 1977—1978 the average proportion of Brassicaceae pollen has risen, while the proportion of T. repens + T. hybridum pollen has decreased, evidently due to the changes in agricultural practices. The seasonal variation in the pollen spectrum was explained by the weather conditions. Regionally characteristic pollen spectra were not found, although Brassicaceae pollen was typical of the honeys of agricultural zones I and II, due to cultivation of Brassica oilseed crops in those regions. The positive correlation of the proportion of Brassicaceae pollen with the total pollen count is discussed in connection with the problem of determining the botanical origin.

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Suomalaisen hunajan ominaisuuksista ja alkuperästä

Cited by 3 publications

References 4 publications

Pollen analyses of honey from Finland

Pollen analyses of honey from Finland

Influence of changes in crop cultivation areas on pollen contents of honey (Research Note)

Pollen spectrum of Finnish honey

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