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| Pedralli,Gilberto; Carmo,Carlos A. Simões do; Cereda,Marney; Puiatti,Mário. |
| A origem dos nomes vulgares das espécies muitas vezes é obscura ou mesmo impossível de ser identificada. Face à semelhança que apresentam alguns tipos de sistema subterrâneo de Dioscorea com aqueles das espécies de Colocasia, observa-se em muitos trabalhos publicados na literatura brasileira uma certa confusão na terminologia usada para definir estruturas principalmente em algumas espécies de "inhame" e "cará". A padronização no Brasil da nomenclatura das estruturas subterrâneas destas hortaliças, à luz dos "Códigos Internacionais de Nomenclatura Botânica e das Plantas Cultivadas", permitirá melhor entendimento para pesquisadores, extensionistas, sociedades civis organizadas, importadores, produtores, comerciantes e consumidores, na identificação das... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colocasia; Dioscorea; Inhame; Cará; Taro. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362002000400002 |
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| Schols, P.; Wilkin, P.; Furness, C.; Huysmans, S.; Smets, E.. |
| Pollen character evolution in yams (Dioscorea: Dioscoreaceae) was investigated in relation to the phylogeny obtained from a recent combined analysis of rbcL and matK gene sequences. The following characters were evaluated: pollen size, aperture number, sexine ornamentation, perforation density, and orbicule presence or absence. Continuous characters were coded using the gap weighting method. Each character was optimized using MacClade onto a tree selected at random from analyses based on molecular data of Wilkin et al. The results indicate that in Dioscorea pollen size decreases in the more derived clades. The latter observation may be related to the evolution of annually replaced tubers. Aperture number increases from one in the monosulcate Stenophora... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dioscorea; Dioscoreaceae; Pollen; Evolution; Phylogeny. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/407309 |
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| Hsu, K.-M.; Tsai, J.-L.; Chen, M.-Y.; Ku, H.-M.; Liu, S.-C.. |
| The phylogenetic relationships of Dioscorea, including sections Botryosicyos, Combilium, Enantiophyllum, Lasiophyton, Opsophyton, Shannicorea and Stenophora, are reconstructed with chloroplast trnL-F, matK, rbcL and atpB-rbcL sequence data, covering a total of 72 accessions including 48 ingroup species and five outgroup species from East and Southeast Asia. The seven Asian sections do reflect the genetic relationships among the species that they include. In summary, D. sect. Combilium and sect. Shannicorea are recognized as closely related sections with moderate support. The results also support Burkills treatment of subsect. Euopsophyton (D. bulbifera) as sect. Opsophyton and subsect. Macrourae (D. sansibarensis) as sect. Macroura. In addition, there is a... |
| Tipo: Article / Letter to the editor |
Palavras-chave: AtpB-rbcL; Dioscorea; MatK; Molecular phylogeny; RbcL; TrnL-F. |
| Ano: 2013 |
URL: http://www.repository.naturalis.nl/record/524972 |
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| Wilkin, P.; Schols, P.; Chase, M.; Chayamarit, K.; Furness, C.; Huysmans, S.; Rakotonasolo, F.; Smets, E.; Thapyai, C.. |
| Following recent phylogenetic studies of the families and genera of Dioscoreales, the identification of monophyletic infrageneric taxa in the pantropical genus Dioscorea is a priority. A phylogenetic analysis based on sequence data from the plastid genes rbcL and matK is presented, using 67 species of Dioscorea and covering all the main Old World and selected New World lineages. The analysis used 14 outgroup taxa, including Trichopus Gaertn., Tacca J.R. & G. Forster, Stenomeris Planch., Burmannia L. and Thismia Griff. The main findings are: a) that a clade of rhizomatous taxa is sister to the rest of Dioscorea; b) the main Old World groups (such as the right-twining D. sect. Enantiophyllum) are monophyletic and c) there are two distinct lineages among... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Dioscorea; Phylogeny; Classification; Analysis; Plastid genes; RbcL; MatK; Character evolution. |
| Ano: 2005 |
URL: http://www.repository.naturalis.nl/record/407311 |
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| Acevedo Mercado,Alba Nelly; Sandoval Assia,Ismael Segundo; Salcedo Mendoza,Jairo Guadalupe. |
| En la región Montes de María (9° 24' 56,33" N y 75° 23' 04,19" O), departamento de Sucre, Colombia, en zonas de clima cálido (26 °C y 30 °C) y de clima medio (20 °C y 24 °C), humedad relativa entre 75 y 85% y precipitación de 750 mm durante el ensayo se estudió el efecto del riego en el desarrollo y productividad de dos especies de ñame en peligro de extinción (Dioscorea trifida y Dioscorea esculenta) en un diseño experimental de parcelas subdivididas, donde las variables fueron tres condiciones hídricas: riego de 888 mm durante la etapa crítica del cultivo, riego de 944 mm durante todo el ciclo del cultivo, y ausencia de riego con una oferta de agua de 750 mm provenientes de precipitación. La densidad de siembra fue de 10,000 plantas/ha, labranza... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dioscorea; Cultivo; Rendimiento; Riego complementario. |
| Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122015000100004 |
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