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| RECH,KATLIN S.; SILVA,CRISTIANE B.; KULIK,JULIANA D.; DIAS,JOSIANE F.G.; ZANIN,SANDRA M.W.; KERBER,VITOR A.; OCAMPOS,FERNANDA M.M.; DALARMI,LUCIANE; SANTOS,GEDIR O.; SIMIONATTO,EUCLÉSIO; LIMA,CRISTINA P.; MIGUEL,OBDÚLIO G.; MIGUEL,MARILIS D.. |
| Senna ocidentalis is a weed, native to Brazil, considered to infest crops and plantations, and is responsible for yield losses of several crops, particularly soybean. The aim of this work was to evaluate if theCroton argenteus extract and fractions possess phytotoxic activity on S. ocidentalis. The crude ethanolic extract (CEE) and its hexanic (HF), chloroformic (CLF) and ethyl acetate (EAF) fractions were tested in germination, growth, oxidative stress increase, Adenosine triphosphate, L-malate and succinate synthesis. The crude extract and its fractions slowed down the germination of S. ocidentalis and decreased the final percentage of germination. Oxidative stress was also increased in the seedlings, by an increase of catalase, peroxidase, superoxide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alelochemicals; Fedegoso; Velame branco; ATP synthesis; Antioxidant defense. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200753 |
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| Resende,Juliano TV de; Maluf,Wilson R; Cardoso,Maria das Graças; Gonçalves,Luciano Donizete; Faria,Marcos V; Nascimento,Ildon R do. |
| Acylsugars in the leaflets of the wild accession LA-716 (Lycopersicon pennellii) gives resistance to Bemisia spp., which causes expressive losses to the tomato crop. The goal of this work was to evaluate the resistance to the silverleaf whitefly (Bemisia tabaci biotype B) of previously selected genotypes, based on the level of acylsugars in the leaflets. F2BC1 plants {F2[Lycopersicon esculentum TOM 584 x (L. esculentum TOM 584 x L. pennellii LA-716)]} were selected for extreme contents of acylsugars: BPX-370B pl#30-275, BPX-370B pl#79-278, BPX-370B pl#30-380, BPX-370B pl#25-271 (high contents), BPX-370B pl#30-02, BPX-370B pl#30-142 (low contents). These genotypes, along with the parents TOM 584 and LA-716, were submitted to a silverleaf whitefly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bemisia tabaci biotype B; Lycopersicon esculentum; Lycopersicon pennellii; Alelochemicals; Plant breeding; Host plant resistance. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300015 |
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