caa a22 4500 477053696 CHVBK 20180405111343.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF02152703 doi (NATIONALLICENCE)springer-10.1007/BF02152703 Flowering seasonality and flower characteristics of Loranthus acaciae Zucc. (Loranthaceae): Implications for advertisement and bird-pollination [Elektronische Daten] [Yiftach Vaknin, Yoram Tov, Dan Eisikowitch] The flowering biology and pollination ecology ofLoranthus acaciae was studied at Hazeva in the northern Arava Valley in Israel. Flowers at anthesis had red anthers, a red stigma and a green corolla which turned red as a postfloral phenomenon. Their flowering period was approximately 10 months long (from mid-June until mid-April) during which time two main flowering patterns were distinguished. Some plants flowered twice a year, with separate summer and winter flowering periods; other plants flowered continuously, with two peaks, one in the summer and one in the winter. Several significant differences between summer and winter flowering and fruiting were found: (1) the summer flowering period was shorter than that of winter, (2) flowering synchrony between individual plants was lower in summer than in winter, (3) in summer the plants produced a larger proportion of female flowers, whereas in winter most of the plants produced a larger proportion of hermaphrodites, (4) in summer a limited number of plants produced smaller flowers while the majority produced normal-sized flowers, whereas in winter the entire population produced only normal-sized flowers, and (5) fruit set percentage was lower in summer than in winter.L. acaciae was found to be self-compatible, but, since it was not spontaneously self-pollinated, it showed high dependence on pollinator activity. In summer the flowers were visited by a wide spectrum of pollinators, both birds and insects, while in winter flowers were visited almost exclusively by the orange-tufted sunbird (Nectarinia osea osea, Nectariniidae). These seasonal changes in flowering characteristics and pollinator activity could explain why reproductive success is higher in winter than in summer. Springer-Verlag, 1996 Loranthus acaciae nationallicence Nectarinia osea osea nationallicence Gynomonoecious nationallicence Male sterility nationallicence Self-compatible nationallicence Vaknin Yiftach Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel aut Tov Yoram Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel aut Eisikowitch Dan Department of Botany, George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel aut Sexual Plant Reproduction Springer-Verlag 9/5(1996-09-01), 279-285 0934-0882 9:5<279 1996 9 497 https://doi.org/10.1007/BF02152703 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02152703 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vaknin Yiftach Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel aut NATIONALLICENCE 700 1- Tov Yoram Department of Zoology, George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel aut NATIONALLICENCE 700 1- Eisikowitch Dan Department of Botany, George S. Wise Faculty of Life Sciences, Tel Aviv University, 69978, Tel Aviv, Israel aut NATIONALLICENCE 773 0- Sexual Plant Reproduction Springer-Verlag 9/5(1996-09-01), 279-285 0934-0882 9:5<279 1996 9 497 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer