Nectar and pollen production in pumpkin (Cucurbita pepo L.)

Detalhes bibliográficos
Autor(a) principal: Vidal,Maria das Graças
Data de Publicação: 2006
Outros Autores: Jong,David de, Wien,Hans Chris, Morse,Roger A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Botany
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000200008
Resumo: 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 7h, 9h and 11h, did not vary, averaging 50.5% ± 0.5% in 1996 and 40.5% ± 0.6% in 1997. At 13h the concentration decreased to 42% in 1996 and to 35% in 1997. Total daily nectar production was not influenced by removing nectar several times per day, indicating that nectar secretion is not stimulated or inhibited by frequent removal. The number of pollen grains did not differ in the two years, with an average of 43,669 ± 1,382 grains per flower. The peak rate of male and female flowers occurred from 60 to 66 days after planting (DAP) with 34.6 male flowers and 2.2 female flowers per plant, respectively. Cucurbita pepo has a potential for honey and pollen production of about 105 and 160 kg per hectare per season, respectively, which is enough to sustain, at least, five honeybee colonies.
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spelling Nectar and pollen production in pumpkin (Cucurbita pepo L.)flower productionhoney potentialnectar productionpollen productionsugar concentrationCucurbitaceae 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 7h, 9h and 11h, did not vary, averaging 50.5% ± 0.5% in 1996 and 40.5% ± 0.6% in 1997. At 13h the concentration decreased to 42% in 1996 and to 35% in 1997. Total daily nectar production was not influenced by removing nectar several times per day, indicating that nectar secretion is not stimulated or inhibited by frequent removal. The number of pollen grains did not differ in the two years, with an average of 43,669 ± 1,382 grains per flower. The peak rate of male and female flowers occurred from 60 to 66 days after planting (DAP) with 34.6 male flowers and 2.2 female flowers per plant, respectively. Cucurbita pepo has a potential for honey and pollen production of about 105 and 160 kg per hectare per season, respectively, which is enough to sustain, at least, five honeybee colonies.Sociedade Botânica de São Paulo2006-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000200008Brazilian Journal of Botany v.29 n.2 2006reponame:Brazilian Journal of Botanyinstname:Sociedade Botânica de São Paulo (SBSP)instacron:SBSP10.1590/S0100-84042006000200008info:eu-repo/semantics/openAccessVidal,Maria das GraçasJong,David deWien,Hans ChrisMorse,Roger A.eng2007-01-08T00:00:00Zoai:scielo:S0100-84042006000200008Revistahttps://www.scielo.br/j/rbb/ONGhttps://old.scielo.br/oai/scielo-oai.phpbrazbot@gmail.com||brazbot@gmail.com1806-99590100-8404opendoar:2007-01-08T00:00Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP)false
dc.title.none.fl_str_mv Nectar and pollen production in pumpkin (Cucurbita pepo L.)
title Nectar and pollen production in pumpkin (Cucurbita pepo L.)
spellingShingle Nectar and pollen production in pumpkin (Cucurbita pepo L.)
Vidal,Maria das Graças
flower production
honey potential
nectar production
pollen production
sugar concentration
title_short Nectar and pollen production in pumpkin (Cucurbita pepo L.)
title_full Nectar and pollen production in pumpkin (Cucurbita pepo L.)
title_fullStr Nectar and pollen production in pumpkin (Cucurbita pepo L.)
title_full_unstemmed Nectar and pollen production in pumpkin (Cucurbita pepo L.)
title_sort Nectar and pollen production in pumpkin (Cucurbita pepo L.)
author Vidal,Maria das Graças
author_facet Vidal,Maria das Graças
Jong,David de
Wien,Hans Chris
Morse,Roger A.
author_role author
author2 Jong,David de
Wien,Hans Chris
Morse,Roger A.
author2_role author
author
author
dc.contributor.author.fl_str_mv Vidal,Maria das Graças
Jong,David de
Wien,Hans Chris
Morse,Roger A.
dc.subject.por.fl_str_mv flower production
honey potential
nectar production
pollen production
sugar concentration
topic flower production
honey potential
nectar production
pollen production
sugar concentration
description 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 7h, 9h and 11h, did not vary, averaging 50.5% ± 0.5% in 1996 and 40.5% ± 0.6% in 1997. At 13h the concentration decreased to 42% in 1996 and to 35% in 1997. Total daily nectar production was not influenced by removing nectar several times per day, indicating that nectar secretion is not stimulated or inhibited by frequent removal. The number of pollen grains did not differ in the two years, with an average of 43,669 ± 1,382 grains per flower. The peak rate of male and female flowers occurred from 60 to 66 days after planting (DAP) with 34.6 male flowers and 2.2 female flowers per plant, respectively. Cucurbita pepo has a potential for honey and pollen production of about 105 and 160 kg per hectare per season, respectively, which is enough to sustain, at least, five honeybee colonies.
publishDate 2006
dc.date.none.fl_str_mv 2006-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042006000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-84042006000200008
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Botânica de São Paulo
publisher.none.fl_str_mv Sociedade Botânica de São Paulo
dc.source.none.fl_str_mv Brazilian Journal of Botany v.29 n.2 2006
reponame:Brazilian Journal of Botany
instname:Sociedade Botânica de São Paulo (SBSP)
instacron:SBSP
instname_str Sociedade Botânica de São Paulo (SBSP)
instacron_str SBSP
institution SBSP
reponame_str Brazilian Journal of Botany
collection Brazilian Journal of Botany
repository.name.fl_str_mv Brazilian Journal of Botany - Sociedade Botânica de São Paulo (SBSP)
repository.mail.fl_str_mv brazbot@gmail.com||brazbot@gmail.com
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