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| Velasco-Ramírez,Ana Paulina; Torres-Morán,Martha Isabel; Molina-Moret,Sandy; Sánchez-González,José de Jesús; Santacruz-Ruvalcaba,Fernando. |
| Background At present, species known as camote de cerro (Dioscorea spp.) are found only in the wilderness in Mexico, but their populations are extremely depleted because they are indiscriminately collected, it is urgent to evaluate the conservation status of these plants in order to design conservation genetics programs. In this study, genetic diversity parameters along with cluster analysis based on Jaccard's coefficient were estimated with the objective to assess the efficiency of Random Amplified Polymorphic DNA (RAPD), Inter Simple Sequence Repeat (ISSR), Amplified Fragment Length Polymorphism (AFLP) and Inverse Sequence Tagged Repeat (ISTR) molecular DNA markers in the Dioscorea genus. Results The polymorphic information contents were quite similar... |
| Tipo: Journal article |
Palavras-chave: Dioscoreaceae; Genetic diversity; Molecular markers; Tuber. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000200002 |
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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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