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| Lima,Ana Lúcia da Silva; Zanella,Fábio; Schiavinato,Marlene Aparecida; Haddad,Claudia Regina Baptista. |
| In general, perennial species contain higher concentrations of certain secondary compounds, such as phenolics, lower levels of nitrogenous compounds, and greater specific leaf mass (SLM) than deciduous species. The aim of this study was to verify whether the comparative data reported in the literature regarding deciduous and evergreen species, also applies to four selected species of a semideciduous tropical forest (a remnant of the Atlantic Forest). The four species chosen for this study, each with apparently different leaf life spans, were two semideciduous (Hymenaea courbaril L. var. stilbocarpa (Hayne) Lee et Lang., and Lonchocarpus guilleminianus (Tul.) Malme, and two deciduous (Enterolobium contortisiliquum (Vell.) Morong., and Peltophorum dubium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf life span; Specific leaf mass; Total nitrogen; Tannins; Atlantic forest. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000100007 |
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| Almeida,Ellen Loregian de; Marcos,Fernanda Castro Correia; Schiavinato,Marlene Aparecida; Lagôa,Ana Maria Magalhães Andrade; Abreu,Mônica Ferreira de. |
| O excesso de metais pesados no solo pode se tornar um perigo para a saúde do homem, dos animais e das plantas. A fitorremediação é uma técnica com aplicação crescente em áreas de solos poluídos visando à descontaminação do solo e da água, utilizando plantas como agente descontaminador. O presente trabalho teve por objetivo avaliar o potencial fitoextrator da espécie leguminosa feijão-de-porco [Canavalia ensiformis (L.) D.C.] em relação ao chumbo (Pb), por meio da avaliação dos efeitos desse metal pesado na fisiologia da planta e na nodulação das raízes. O experimento foi realizado sob condições naturais de luz e temperatura, em casa de vegetação, com vasos contendo 2 L de areia. As plantas, com e sem inoculação de rizóbio, foram submetidas a quatro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitorremediação; Canavalia ensiformis; Feijão-de-porco; Nódulos radiculares; Rizóbio. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052008000300003 |
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| Azzolini,Marisa; Jacomino,Angelo Pedro; Bron,Ilana Urbano; Kluge,Ricardo Alfredo; Schiavinato,Marlene Aparecida. |
| Guava (Psidium guajava L.) is a tropical fruit exhibiting rapid post-harvest ripening. However, the physiological basis involved in the ripening process of guava is not totally clear, which makes it difficult to develop technologies to enhance fruit storability. Two experiments were carried out with the objective of determining the ripening behavior of 'Pedro Sato' guavas. In the first experiment, guava fruits at three maturity stages (I - dark green, II - light green and III - yellow-green) were stored at room temperature (23 ± 1°C and 85 ± 5 % RH). The respiratory rate, ethylene production, pulp and skin colours, and firmness were evaluated. In the second experiment, ethylene and 1-methylcyclopropene (1-MCP) were applied to guavas at the light green... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psidium guajava; Ethylene; 1-methylcyclopropene; Respiration. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000300004 |
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| Zanella,Fábio; Watanabe,Tania Misae; Lima,Ana Lúcia da Silva; Schiavinato,Marlene Aparecida. |
| The effects of drought and rehydration on Canavalia ensiformis (L.) D.C. (jack bean) plants were evaluated using the following gas exchange parameters: net carbon assimilation rate (A), stomatal conductance (g s), Ci/Ca ratio and transpiration rate (E); chlorophyll a fluorescence: Fv/Fm and Fv/F0 ratio. The plants were cultivated under greenhouse conditions and after 30 days from the emergence, irrigation was suspended in the plants submitted to drought, to obtain the following predawn leaf water potential (psipd): -0.40 MPa (control), -1.00 MPa (moderate drought) and -2.30 Mpa (severe drought). Afterwards, the gas exchange and fluorescence analysis were initiated , and 24 h after rehydration the same analyses were repeated. The A, E, g s and Ci/Ca values... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Fluorescence; Moderate drought; Photosynthesis; Severe drought; Stomatal conductance. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000300008 |
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