|
|
|
|
|
| Boiago, Nayara Parisoto; Fortes, Andréa Maria Teixeira; Pilatti, Daiane Maria; Silva, Paulo Sérgio Siberti da. |
| This study aimed to analyse the allelopathic bioactivity of fresh and infused aqueous extracts of Brazilian cherry leaves on the germination of lettuce and the initial development of maize. Brazilian cherry leaves were used to prepare a fresh aqueous extract (200 g L-1) and an infused extract (100 g L-1), which were diluted to concentrations of 0.4, 0.8, 1.2, 1.6 or 2.0% w/v. The variables evaluated in lettuce were the germination rate (GR), germination time index (GTI), germination speed index (GSI) and root length (RL). To determine the effect on the initial development of maize, we measured the shoot (SL) and root (RL) length. The experimental design included a factorial 2 × 5 design (two extracts and five concentrations), in addition to a control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0; 2.03.03.00-9 Lactuca sativa; Zea mays; Allelopathy; Allelochemicals; Chemical ecology. Botânica; Fisiologia Vegetal. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40972 |
| |
|
|
| Ribeiro, Vandjore de Mattos; Spiassi, Ariane; Marcon, Thaís Regina; Lima, Gislaine Piccolo de; Corsato, Jaqueline Malagutti; Fortes, Andréa Maria Teixeira. |
| This study aimed to analyze oxidative stress produced in cucumber seeds and seedlings when exposed to aqueous extract from dried leaves of leucaena, as well as its effect on the germination behavior, early growth and the antioxidant enzymes activity. It was evaluated the percentage, the speed index, the average time, the frequency and germination synchronization, the root length and shoot, as well as the catalase and peroxidase enzymes activity. There was no significant inhibitory effect of the leaf extracts on the germination percentage. However, there was delay in the seeds germination, as the extract proportion increased. A stimulatory effect of the extract compared to the shoot length was observed, however the root growth was significantly reduced.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Botânica allelopathy; Reactive oxygen species; Antioxidant enzymes. Fisiologia Vegetal. |
| Ano: 2017 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34801 |
| |
|
|
| Gomes, Fernanda Melo; Fortes, Andréa Maria Teixeira; Silva, Jéssica da; Bonamigo, Thaliny; Pinto, Tassiane Terezinha. |
| O objetivo deste trabalho foi avaliar o efeito alelopático do extrato aquoso de folhas frescas de Lupinus angustifolius L. sobre alface (como planta indicadora), sobre a espécie cultivada milho e a invasora picão-preto. As sementes dessas espécies foram submetidas aos extratos aquosos preparados na proporção de 200g/L (20% p/v) de água destilada e rediluídos nas concentrações de 20% (4% p/v), 40% (8% p/v), 60% (12% p/v), 80% (16% p/v) e 100% (20% p/v), mais um tratamento testemunha com água destilada. Notou-se interferência alelopática negativa em alface e na invasora picão-preto enquanto que para o milho foi observada apenas uma pequena interferência negativa no comprimento médio de raiz, onde a diferença estatística apresenta-se na presença do extrato a... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Crop husbandry; Farm nutrient management. |
| Ano: 2013 |
URL: http://orgprints.org/24419/1/GOMES%2C%20Fernanda%20Melo_Efeito%20alelop%C3%A1tico%20da%20fitomassa%20de.pdf |
| |
|
|
|
