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A literature review of the pollination strategies and breeding systems in Oncidiinae orchids Acta Botanica
Castro,Jonas B.; Singer,Rodrigo B..
ABSTRACT Oncidiinae is an exclusively Neotropical orchid subtribe with about 1600 described species and an impressive array of vegetative and floral morphological adaptations. We present the results of a literature survey on the pollination strategies and breeding systems of this orchid subtribe. The flowers are pollinated by a wide range of insects (mostly bees) and, sometimes, hummingbirds. Several genera reward their pollinators with floral resources such as oils, nectar or perfumes. Whereas pollination by oil-gathering bees likely evolved several times within Oncidiinae, exclusive pollination by perfume-gathering male Euglossine bees is likely restricted to a set of closely-related genera. Pollination by food or sexual deception is also present within...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breeding systems; Deception; Elaiophores; Fruiting success; Nectaries; Oncidiinae; Orchids; Osmophores; Pollination strategies.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400618
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Evaluation of anti-estrogenic or estrogenic activities of aqueous root extracts of Gunnera manicata L. BJPS
Mariotti,Kristiane de Cássia; Schmitt,Gabriela Cristina; Barreto,Fabiano; Fortunato,Rodrigo E.; Singer,Rodrigo B.; Dallegrave,Eliane; Leal,Mirna Bainy; Limberger,Renata Pereira.
Gunnera perpensa (Gunneraceae) is an African plant widely used in traditional medicine. This species is known for its activity involving the female reproductive system, such as inducing or increasing labor, treating female infertility, expelling the placenta and/or preventing post-partum hemorrhage. These properties are probably due to (z)-venusol, a majoritary compound, and its action in conjunction with substances in the whole extract and other natural products. In southern Brazil, a native species Gunnera manicata L. that also belongs to Gunneraceae can be found. In spite of the traditional use of G. perpensa, there is no pharmacological and phytochemical information regarding the South American Gunnera species. Therefore, the aim of this study was to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gunnera manicata L./pharmacognosy; Gunneraceae/pharmacognosy; Medicinal plants; Uterotrophic assay/experimental study.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000300018
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