Influence of microclimatic conditions on nectar exudation in Glechoma hirsuta W.K.
2005
Macukanovic-Jocic, M., Faculty of Veterinary Medicine, Belgrade (Serbia). Department of Botany | Djurdjevic, I., Institute for Biological Research Sinisa Stankovic, Belgrade (Serbia)
The nectar production of Glechoma hirsuta grown under different microclimatic habitat conditions was evaluated by determining the total daily nectar quantity per flower, diurnal dynamics of nectar secretion, the nectar secretion rate, and sugar concentration. Comparative analyses nectar production in Glechoma hirsuta grown in a forest and on a test plot confirmed that this process varied as a function of microclimatic parameters, but did not reveal a close relationship between these parameters and sugar concentration in nectar. More intensive nectar secretion, with a decreasing tendency during the day, and higher total daily nectar volume per plant were measured in the forest habitat. Diurnal variation in nectar production with two secretion peaks was found at both localities, and the secretion patterns were rather similar. Regarding the nectar secretion rate, Glechoma hirsuta is a slow producer, secreting less than 0.07 ml/h.
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