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Article: Imprimé

Variation in nectar volume and sugar concentration of Allium ursinum L. ssp. ucrainicum in three habitats / Ágnes Farkas in The Scientific World Journal, 2012 (2012)

Article (2012)

[article]
inThe Scientific World Journal > 2012 (2012) . - 1-7

Titre :	Variation in nectar volume and sugar concentration of Allium ursinum L. ssp. ucrainicum in three habitats
Type de document :	Imprimé
Auteurs :	Ágnes Farkas ; Réka Molnár ; Tamás Morschhauser ; István Hahn
Année de publication :	2012
Article en page(s) :	1-7
Mots-clés :	Allium ursinum L.
Résumé :	Floral nectar volume and concentration of ramson (Allium ursinum L. ssp. ucrainicum) were investigated in three different habitats, including two types of sessile oak-hornbeam association on brown forest soil with clay illuviation and a silver lime-flowering ash rock forest association on rendzina. Daily nectar production ranged from 0.1 to 3.8 μL per flower with sugar concentrations of 25 to 50%. Mean nectar volumes and concentrations showed significant differences between freely exposed flowers and covered flowers, which had been isolated from flower visitors 24 h prior to nectar studies. Both the amount and quality of nectar were affected by microclimatic conditions and soil properties and varied between populations at different habitats. In the silver lime-flowering ash rock-forest association mean nectar volumes and concentrations were lower than in a typical sessile oak-hornbeam association on three occasions, the difference being significant in two cases. During full bloom, the date of sampling did not have a profound effect on either nectar volume or concentration.
Lien pérenne :	DOI : 10.1100/2012/138579
Permalink :	https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=151731

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