Chemical composition of the 'low quality' pollen of sunflower (Helianthus annuus, Asteraceae)

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dc.contributor.author Nicolson, Sue W.
dc.contributor.author Human, Hannelie
dc.date.accessioned 2012-11-01T10:14:40Z
dc.date.available 2012-11-01T10:14:40Z
dc.date.issued 2013-03
dc.description.abstract The nutritional needs of bees are receiving renewed attention in the context of declining bee populations and changes in land use that threaten floral resources. We present a comprehensive analysis of the nutritional composition of sunflower (Helianthus annuus) pollen, comparing hand-collected, bee-collected and stored pollen. As found in previous studies, the protein content of sunflower pollen was relatively low compared to other important bee forage plants. In the cultivars tested two essential amino acids, methionine and tryptophan, are likely to be below the minimum requirements for honeybees. Fatty acid composition showed lauric acid to be most abundant, followed by palmitic and α-linolenic acids. While sunflower offers abundant and accessible pollen, its quality may hinder bee development when it is an exclusive pollen source, and the cultivars of such mass-flowering crops may vary in value for pollinators. en
dc.description.librarian ab2012 en
dc.description.sponsorship The National Research Foundation and the University of Pretoria. en
dc.description.uri http://www.apidologie.org/ en
dc.identifier.citation Nicolson, SW & Human H 2012, 'Chemical composition of the 'low quality' pollen of sunflower (Helianthus annuus, Asteraceae)', Apidologie, vol. 44, no. 2, pp. 144-152. en
dc.identifier.issn 0044-8435 (print)
dc.identifier.issn 1297-9678 (online)
dc.identifier.other 10.1007/s13592-012-0166-5
dc.identifier.uri http://hdl.handle.net/2263/20334
dc.language.iso en en
dc.publisher Springer en
dc.rights © INRA, DIB and Springer-Verlag, France, 2012. The original publication is available at www.springerlink.com. en
dc.subject Nutrients en
dc.subject Protein en
dc.subject Lipids en
dc.subject Amino acid (AA) en
dc.subject Fatty acids en
dc.subject.lcsh Bees en
dc.subject.lcsh Sunflowers en
dc.subject.lcsh Compositae en
dc.subject.lcsh Pollen en
dc.title Chemical composition of the 'low quality' pollen of sunflower (Helianthus annuus, Asteraceae) en
dc.type Postprint Article en


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