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| Registros recuperados: 90 | |
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| Giuriatto Júnior,Jurandyr José Ton; Espindula,Marcelo Curitiba; Araújo,Larissa Fatarelli Bento de; Vasconcelos,Jaqueline Martins; Campanharo,Marcela. |
| ABSTRACT The intrinsic characteristics of the vegetative propagule may influence the rooting speed and shoot growth, as well as the final physiological quality of clonal seedlings of Coffea canephora. The aim of this study was to evaluate the growth and physiological quality of ‘Robusta’ coffee seedlings produced from propagules (stem cuttings) with different cutting ages. The study was conducted in a greenhouse, in the district of Ouro Preto do Oeste, in Rondônia, Brazil (10˚45’43” S and 62˚15’10” W). The ages of the cuttings were 30, 60, 90, 120 and 150 days, corresponding to five positions on the secondary orthotropic stem (sprout), from the apex to the base. Dry matter accumulation, and relative and absolute growth rates were evaluated for 188 days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rubiaceae; Coffea canephora; Cuttings; Maturation stage; Weight accumulation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400403 |
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| Moreira,Samuel D.; França,André C.; Rocha,Wellington W.; Tibães,Evandro S. R.; Neiva Júnior,Eudes. |
| ABSTRACT Water stress can be alleviated in plants inoculated with arbuscular mycorrhizal fungi compared to that experienced by those without mycorrhizae. The objective of this study was to evaluate the growth of coffee plants colonized by arbuscular mycorrhizal fungi under different soil moisture conditions. Seeds of the coffee cultivar Catuaí Vermelho IAC 99 and three fungal inoculants (Rhizophagus clarus, Claroideoglomus etunicatum and Dentiscutata heterogama) were used in this study. The soil moisture contents tested were 40, 60, 80, and 100% of field capacity. Seedlings in the matchstick stage were inoculated with mycorrhizae, and then later planted in plastic pots when they developed four to five pairs of definitive leaves. Both the extent of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica L.; Rubiaceae; Field capacity; Arbuscular mycorrhiza. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001100747 |
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| Monteiro,Juliana Castro; Matta,Sérgio Luis Pinto da; Predes,Fabrícia de Souza; Oliveira,Tânia Toledo de. |
| Rudgea viburnoides leaves are widely used in popular Brazilian medicine as a diuretic, antirheumatic, hypotensive and blood depurative tea. The present study was carried out to investigate the effects of this infusion on the liver and on the plasma biochemical parameters of Wistar rats. Two groups received the R. viburnoides leaf infusion at a daily dose of 10 or 20g dry-leaves/L water, during 40 days. The histopathological analysis did not show degenerated areas or infiltration of leucocytes. Hepatic morphometry showed accumulation of fat in the hepatocytes of the treated groups. There was no significant change in the plasma levels of urea, creatinin, uric acid, direct bilirubin, cholesterol, total proteins, albumin, gamma glutamyl tranferase (gamma-GT),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Congonha-de-bugre; Rubiaceae; Medicinal plants. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200018 |
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| Gallon,Mateus; Trezzi,Michelangelo Muzell; Diesel,Francielli; Possenti,Jean Carlo; Batistel,Sorhaila Camila. |
| ABSTRACT Specific knowledge on dormancy and germination patterns of weed species aids the development of integrated management strategies. This study aimed to evaluate and select effective methods for overcoming dormancy in B. latifolia seeds, as well as determining their influence on the germination process. A completely randomized experimental design was used, with four replications and 20 seeds per repetition. Seven tests were conducted, with the corresponding B. latifolia seed treatments: Test 1 - mechanical scarification, sulfuric acid, hot water and running water; Test 2 - pre-cooling at 4 °C and dry heat at 60 °C. Test 3 - gibberellic acid at concentrations of 0, 50, 100, 200 and 400 ppm; Test 4 - acetic acid and potassium nitrate 2%; Test 5 - dual... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broadleaf buttonweed; Overcoming; Dormancy; Soaking; Rubiaceae. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000300475 |
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| Davis, A.P.; Razafimandimbison, S.G.; Andriambololonera, S.. |
| Five new combinations are made in the genus Bremeria: B. arachnocarpa, B. eriantha, B. scabrella, B. landia var. holosericea, and B. landia var. stadmanii. Bremeria gerrardii is conspecific with Gaertnera phanerophlebia, and thus excluded from Bremeria. Lectotypes are designated for Mussaenda erectiloba var. scabrella, M. stadmanii, and M. trichophlebia. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Bremeria; Gaertnera; Madagascar; Mascarenes; Mussaenda; Nomenclature; Rubiaceae. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/525988 |
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| Souza,Elnatan B. de; Costa,Cristiana B. N.; Borba,Eduardo L.. |
| O estudo da biologia reprodutiva de Mitracarpus longicalyx E.B. Souza & M.F. Sales foi realizado durante os meses de setembro a dezembro de 2004, em Feira de Santana, BA, Brasil. Esta espécie é uma erva anual ocorrente em áreas de caatinga, florescendo de junho a dezembro. As inflorescências são glomérulos com 90 flores em média, que apresentam corola hipocrateriforme, medindo 4-5 mm de comprimento e coloração branca, sendo visitadas e polinizadas por borboletas da espécie Hemiargus hanno hanno (Stoll, 1790) (Lycaenidae). As flores são protândricas, com duração da fase estaminada de três dias e da fase pistilada de cinco dias. Não ocorre sobreposição das duas fases na mesma flor, mas podem ocorrer flores em diferentes fases na mesma inflorescência.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auto-incompatibilidade; Mitracarpus; Protandria; Rubiaceae; Sistemas de reprodução. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000200012 |
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| Souza,Rafaela Ribeiro de; Paiva,Patrícia Duarte de Oliveira; Silva,Raphael Reis da; Reis,Michele Valquíria dos; Nery,Fernanda Carlota; Paiva,Renato. |
| ABSTRACT The in vitro seed germination is an effective alternative for quickly obtaining explants with sanitary quality. However, jenipapo seeds present slow and uneven germination. Therefore, internal and external factors to seed which directly interfere in the process, they must be identified, in order to adapt better techniques to obtain seedlings. In this sense, this work aimed to optimize the in vitro germination of Genipa americana L. seeds by evaluating different factors (light quality, GA3 treatment, pre-soaking in distilled water, growing media and stratification in the dark). It was found that the seed germination of G. americana was indifferent to light, however, the best results were obtained under conditions of continuous darkness; There was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genipa americana L; In vitro culture; Ligth quality; Rubiaceae; Stratification in the dark. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600658 |
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| Miguel,Emilio de Castro; Pireda,Saulo; Barros,Claudia Franca; Zottich,Umberto; Gomes,Valdirene Moreira; Miguens,Flavio Costa; Cunha,Maura Da. |
| ABSTRACT Secretory structures are formed by many types of plants and are present on numerous different organs. Among the many types of known secretory structures, colleters are predominant on plants of the Rubiaceae. One remarkable characteristic of secretory tissues is the export of exudates; however, the precise mechanism involved in this process is still unclear. To better understand the mechanisms of exudate externalization it is necessary to understand the ultrastructure and dynamics of the outer cell wall of the secretory structures during the secretory process, and so we investigated these aspects of the colleters of Bathysa nicholsonii. The outer cell wall (OCW) exhibits multiple layers: a basal polysaccharide rich layer; a cuticular membrane,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colleters; Outer cell wall; Rubiaceae; Secretion accumulation site; Secretion mechanism; Secretory structures; Secretory tissues. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000300411 |
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| Dessein, S.; Ochoterena, H.; De Block, P.; Lens, F.; Robbrecht, E.; Schols, P.; Smets, E.; Vinckier, S.; Huysmans, S.. |
| In the 1990s Rubiaceae became a hot spot for systematists, mainly due to the comprehensive treatment of the family by Robbrecht in 1988. Next to the exploration of macromolecular characters to infer the phylogeny, the palynology of Rubiaceae finally received the attention it deserves. This article aims to present a state-of-the-art analysis of the systematic palynology of the family. The range of variation in pollen morphology is wide, and some of the pollen features are not known from other angiosperm taxa; e.g., a looplike or spiral pattern for the position of apertures in pantoaperturate grains. We compiled an online database at the generic level for the major pollen characters and orbicule presence in Rubiaceae. An overview of the variation is... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Rubiaceae; Pollen morphology; Palynology; Phylogeny. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/407298 |
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| Moura,Renan Fernandes; Alves-Silva,Estevão; Del-Claro,Kleber. |
| ABSTRACT Plant development is influenced by several abiotic factors, which in turn influence morphological traits and life history. We investigated whether leaf area, herbivory, toughness, fluctuating asymmetry, structural complexity and the number of inflorescences of Palicourea rigida are influenced by sun/shade conditions or by Cerrado phytophysiognomy (typical cerrado or rupestrian field). We expected to find greater structural complexity, leaf toughness and more inflorescences in sun plants; shaded plants were expected to exhibit a greater degree of fluctuating asymmetry (an index of plant stress), reduced leaf toughness and greater herbivory. As for phytophysiognomies, we expected to find higher levels of leaf toughness and reduced structural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian savanna; Environmental stress; Fluctuating asymmetry; Leaf area loss; Rubiaceae; Rupestrian grassland. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200286 |
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| Registros recuperados: 90 | |
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