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Apis mellifera pollination improves agronomic productivity of anemophilous castor bean (Ricinus communis) Anais da ABC (AABC)
Rizzardo,Rômulo A.G.; Milfont,Marcelo O.; Silva,Eva M.S. da; Freitas,Breno M..
Castor bean (Ricinus communis L.) is cultivated mainly for biodiesel production because of its oil-rich seeds; it is assumed to be an anemophylous species. But pollination deficit can lead to low productivity often attributed to other reasons. In this paper, we investigated pollination requirements, pollination mechanism, occurrence of pollination deficit, and the role of biotic pollinators in a large commercial plantation of castor bean. Our results show that R. communis bears a mixed breeding system favoring selfing by geitonogamy, although the wind promotes mostly outcrossing. We also found that the honey bee (Apis mellifera L.) foraging on castor bean can both transfer pollen from male to female flowers within the same raceme and boost the release of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oleaginous crop; Pollination deficit; Pollination requirements; Seed yield; Wind insect-assisted pollination.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400028
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Pollen-ovule relation in Adesmia tristis and reflections on the seed–ovule ratio by interaction with pollinators in two vertical strata Anais da ABC (AABC)
FERREIRA,NADILSON R.; FRANKE,LUCIA B.; BLOCHTEIN,BETINA.
The vertical distribution of pollinators is an important component in the foraging pattern of plants strata, and it influences the reproductive system (pollen/ovule ratio) and seed/ovule ratio. Niches in two different strata from Adesmia tristis Vogel were evaluated in these aspects. This plant is an endemic shrub from the Campos de Cima da Serra in Southern Brazil. The studies were carried out from January 2010, to January 2011, at Pró-Mata/PUCRS (Catholic University of Rio Grande do Sul) (29°27′-29°35′S and 50°08′-50°15′W), São Francisco de Paula, sate of Rio Grande do Sul, Brazil. Breeding system of A. tristis is mandatory allogamy. The vertical profile in A. tristis has differentiated foraging niches among the most common pollinators. Bees of Megachile...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allogamy; Bees; Foraging; Niches; Pollination deficit.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301327
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