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| Berthold,David Erwin; Elazar,Ariel; Lefler,Forrest; Marble,Christopher; Laughinghouse IV,Haywood Dail. |
| ABSTRACT Greenhouses and nurseries provide ideal environments for facilitating the formation of nuisance algal mats. Algal growth poses safety concerns to horticulturists and stimulates the propagation of unwanted plant pests and pathogens. To date, few strategies and data are available to effectively manage algal problems. The effectiveness of five algaecides was tested on two varying surfaces of greenhouses in situ to elucidate the efficacy of chemical methods of removing algae. Moreover, Nostoc commune (Vaucher ex Bornet & Flahault) was treated on ceramic tiles in vitro , as it is a common alga in greenhouses and nurseries. We found that each algaecide had different effects, depending on the chemical applied, the surface to which the chemical was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nostoc commune; DNA; Cyanobacteria; Herbicides; Management. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000101601 |
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| Frescura,Viviane Dal-Souto; Laughinghouse IV,Haywood Dail; Dorow,Thais Scotti do Canto-; Tedesco,Solange Bosio. |
| Polygala paniculata L. is a medicinal plant that grows in the Brazilian Atlantic coast, known as 'barba-de-São-João', 'barba-de-bode', 'vassourinha branca', and 'mimosa'. In this study, pollen viability was estimated by three different staining methods: 2% acetic orcein, 2% acetic carmine, and Alexander's stain. The young inflorescences of twenty accessions were collected and fixed in a solution of ethanol: acetic acid (3:1) for 24 hours, then stored in ethanol 70% under refrigeration. Six slides per plant, two for each stain, were prepared by squashing, and 300 pollen grains per slide were analyzed. Pollen viability was high (>70%) for most accessions of P. paniculata using the Alexander's stain, which proved the most adequate method to estimate pollen... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Pollen grains; Barba-de-bode; Acetic orcein; Acetic carmine; Alexander's stain. |
| Ano: 2012 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452012000300007 |
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| Carvalho,Luciana Retz de; Pipole,Fernando; Werner,Vera Regina; Laughinghouse IV,Haywood Dail; Camargo,Antonio Carlos M. de; Rangel,Marisa; Konno,Katsuhiro; Sant' Anna,Célia Leite. |
| Reports of cyanobacterial blooms developing worldwide have considerably increased, and, in most cases, the predominant toxins are microcystins. The present study reports a cyanobacterial bloom in Lake Violão, Torres, Rio Grande do Sul State, in January 2005. Samples collected on January 13, 2005, were submitted to taxonomical, toxicological, and chemical studies. The taxonomical analysis showed many different species of cyanobacteria, and that Microcystis protocystis and Sphaerocavum cf. brasiliense were dominant. Besides these, Microcystis panniformis, Anabaena oumiana,Cylindrospermopsis raciborskii, and Anabaenopsis elenkinii f. circularis were also present. The toxicity of the bloom was confirmed through intraperitoneal tests in mice, and chemical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanobacteria; Blooms; Anabaenopeptins; Microcystins. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400031 |
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| Kuhn,Andrielle Wouters; Tedesco,Marília; Boligon,Aline Augusti; Athayde,Margareth Linde; Laughinghouse IV,Haywood Dail; Tedesco,Solange Bosio. |
| Punica granatum L., locally known as romanzeira, is native to Asia but found throughout Brazil. P. granatum is used for treating inflammatory, infectious and respiratory diseases. The aim of this study was to evaluate the chromatography and genotoxicity of an aqueous extract of P. granatum (pomegranate) fruit peel using the Allium cepa L. test. The experiment set-up entailed 7 treatments: T1-distilled water, T2-tea 5 g.L-1, T3-tea 10 g.L-1, T4-glyphosate at 9.6%, T5-glyphosate with subsequent recovery in distilled water, T6-glyphosate with subsequent recovery in tea 5 g.L-1 and T7-glyphosate with subsequent recovery in tea 10 g.L-1. The rootlets were collected and fixed in ethanol:acetic acid (3:1) for 24 hours, then stored in 70% ethanol under... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Punica granatum L./phytochemistry; Punica granatum L./genotoxicity Punica granatum L./chromatography analysis; Medicinal plants; Pomegranate. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502015000100241 |
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