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Título: | Chromosome number and genome size in Atriplex mollis from southern Tunisia and Atriplex lanfrancoi from Malta (Amaranthaceae) |
Autor: | Tlili, Abderrazak; Gouja, Hassen; Vallès, Joan CSIC ORCID; Garnatje, Teresa CSIC ORCID ; Buhagiar, Joseph; Neffati, Mohamed | Palabras clave: | 2C value Atriplex Chromosome numbers Cremnophyton Flow cytometry Genome size Nuclear DNA content |
Fecha de publicación: | 4-feb-2020 | Editor: | Springer Nature | Citación: | Plant Systematics and Evolution 306:11 (2020) | Resumen: | In this work, we investigated the chromosome number and genome size of two Mediterranean Amaranthaceae species, namely Atriplex mollis from southern Tunisia and A. lanfrancoi (formerly Cremnophyton lanfrancoi) from Malta. The two species were found to be diploid (2n=18) for all examined populations. This result is different from that previously reported for Cremnophyton lanfrancoi Brullo and Pavone (2n=20). Genome size showed that both species have a close mean amount with 2C=3.41 and 3.51 pg, respectively. Two groups were distinguished with regard to genome size (P<0.01). It should, however, be noted that the majority of populations, with the exception of those from Djerba and Chbika, may be intermediate between the two basic groups. Moreover, the difference does not appear to depend on geographical distribution and environmental aspects. It would rather depend on chromosome rearrangements. The morphological similarities, the monophyly of Atriplex including A. lanfrancoi, previously ranked in genus Cremnophyton, sharing the same chromosome number and the same genome size, support the placement of Cremnophyton within the genus Atriplex. | Descripción: | Artículo de 8 páginas que incorpora como material gráfico mapas de localización geográfica, tablas e imágenes de microscopio con cromosomas evidenciados. | Versión del editor: | http://dx.doi.org/10.1007/s00606-020-01643-1 | URI: | http://hdl.handle.net/10261/225856 | DOI: | 10.1007/s00606-020-01643-1 | Identificadores: | doi: 10.1007/s00606-020-01643-1 issn: 0378-2697 |
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