caa a22 4500 47580628X CHVBK 20180406123747.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF00985461 doi (NATIONALLICENCE)springer-10.1007/BF00985461 Nectary structure of Labiatae in relation to their nectar secretion and characteristics in a Mediterranean shrub community — Does flowering time matter? [Elektronische Daten] [T. Petanidou, V. Goethals, E. Smets] We studied the interrelation between nectary structure (13 parameters), nectar characteristics (yield, chemical composition), and flower size of 11 Labiatae species in a Mediterranean shrub community near Athens, Greece. We also explored whether the above attributes are affected by the Mediterranean summer drought constraints. Our findings show that among all nectary parameters studied, nectary size and stomatal opening are the most important in (positively) shaping nectar secretion, nectary size being the most meaningful. Nectary structure is correlated to quantity of the nectar secreted, not its quality. Wide flowers bear wide nectaries with large stomatal openings, whereas deep flowers are not related to any nectary size. Corolla size (both length and width) and nectary stomatal opening decrease with flowering time. This applies also to nectary size, nectar volume and sugar content of the perennials (9 species). All above cases of time dependence show that there is a constraint effect of Mediterranean climate on floral and nectary structure, reflected also as a decrease in nectar secretion. Nectary structure in Labiatae is largely shaped by both phylogenetic and climate constraints. On the other hand, although nectar is largely influenced by nectary structure, it is to a large extent ecologically biased, implying that, in addition to phylogeny, there are many other ecological parameters interfering in its secretion such as time within the season, life history, and light requirements. Springer-Verlag, 2000 Ballota nationallicence Lamium nationallicence Phlomis nationallicence Prasium nationallicence Salvia nationallicence Satureja nationallicence Stachys nationallicence Teucrium nationallicence Thymus nationallicence Modified stomata nationallicence nectarostomata nationallicence nectar composition nationallicence flower size nationallicence Mediterranean shrub community nationallicence phrygana nationallicence Petanidou T. Department of Geography, Faonos and H. Trikoupi, University of the Aegean, Gr-81100, Mytilene, Greece aut Goethals V. Institute of Botany and Microbiology, Laboratory of Plant Systematics, Catholic University of Leuven, Kardinaal Mercierlaan 92, B-3001, Leuven, Belgium aut Smets E. Institute of Botany and Microbiology, Laboratory of Plant Systematics, Catholic University of Leuven, Kardinaal Mercierlaan 92, B-3001, Leuven, Belgium aut Plant Systematics and Evolution Springer-Verlag 225/1-4(2000-03-01), 103-118 0378-2697 225:1-4<103 2000 225 606 https://doi.org/10.1007/BF00985461 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00985461 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Petanidou T. Department of Geography, Faonos and H. Trikoupi, University of the Aegean, Gr-81100, Mytilene, Greece aut NATIONALLICENCE 700 1- Goethals V. Institute of Botany and Microbiology, Laboratory of Plant Systematics, Catholic University of Leuven, Kardinaal Mercierlaan 92, B-3001, Leuven, Belgium aut NATIONALLICENCE 700 1- Smets E. Institute of Botany and Microbiology, Laboratory of Plant Systematics, Catholic University of Leuven, Kardinaal Mercierlaan 92, B-3001, Leuven, Belgium aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 225/1-4(2000-03-01), 103-118 0378-2697 225:1-4<103 2000 225 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer