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	Provedor de dados Gayana Botánica (1) Rev. Bras. Bot. (1) Autor Jong,David de (1) MEDEL,RODRIGO (1) Morse,Roger A. (1) OSSA,CARMEN G (1) Vidal,Maria das Graças (1) Wien,Hans Chris (1) Mais... Palavra-chave Nectar production (2) Flower adaptation (1) Flower longevity (1) Flower production (1) Honey potential (1) Pollen production (1) Pollination syndrome (1) Sugar concentration (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Journal article (1) Ano 2011 (1) 2006 (1) País Brazil (1) Chile (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Nectar and pollen production in pumpkin (Cucurbita pepo L.) Rev. Bras. Bot. Vidal,Maria das Graças; Jong,David de; Wien,Hans Chris; Morse,Roger A.. Cucurbitaceae species depend on pollination by honey bees for fruit production. The overall objective of this work was to evaluate the potential of C. pepo for pollen and nectar production, that could help maintain colonies placed in the field. Plants of pumpkin were cultivated in field, in 1996 and 1997. Before anthesis, male flowers were covered to prevent visits by bees and other insects. After anthesis the flowers were uncovered and the following parameters were evaluated: 1) nectar production; 2) total sugar concentration in the nectar; 3) nectar replacement; and 4) production of pollen and flowers during the crop cycle. Nectar production varied from 18 to 79 µL flower-1 and increased progressively from 7h to 13h. The sugar concentration, measured at... Tipo: Info:eu-repo/semantics/article Palavras-chave: Flower production; Honey potential; Nectar production; Pollen production; Sugar concentration. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000200008 Notes on the floral biology and pollination syndrome of Echinopsis chiloensis (Colla) Friedrich & G.D.Rowley (Cactaceae) in a population of semiarid Chile Gayana Botánica OSSA,CARMEN G; MEDEL,RODRIGO. We report some aspects of the floral biology ofEchinopsis chiloensis ssp. chiloensis in a population near to the northern limit of its distribution. Anthesis is strictly diurnal and flowers remain open during 492 min on the average. Echinopsis chiloensis is self-incompatible. Flower longevity, nectar production along day, and floral visitors indicate that this population fits well to a diurnal insect pollination syndrome. These results contrast with a previous report indicating nocturnal anthesis and mixed mellitophylous-sphingophylous pollination syndrome in populations near to the southern limit of the distribution range. We suggest that the pollination syndrome of E. chiloensis is a labile rather than fixed condition that may depend on the abiotic... Tipo: Journal article Palavras-chave: Flower longevity; Nectar production; Pollination syndrome; Flower adaptation. Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200012 Registros recuperados: 2 Primeira ... 1 ... Última

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