Nuclear DNA Amounts in Roses

Yokoya, K.; Roberts, A.; Mottley, J.; Lewis, Ramsey S.; Brandham, P. E.

doi:10.1006/anbo.1999.1102

Cited by 148 publications

(116 citation statements)

References 16 publications

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“…Many attempts were made to reconstruct the phylogeny of this genus, most of which suggested that the divisions of most subgenera and sections based on morphology were artificial (Bruneau 1986;Roberts et al, 2009;Ueda and Akimoto, 2001;Yokoya et al, 2000). Thus, unlike R. sects.…”

Section: Introductionmentioning

confidence: 99%

Phylogeny of Rosa sections Chinenses and Synstylae (Rosaceae) based on chloroplast and nuclear markers

Zhu

Gao

Fougère‐Danezan

2015

Molecular Phylogenetics and Evolution

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Section: Introductionmentioning

confidence: 99%

Phylogeny of Rosa sections Chinenses and Synstylae (Rosaceae) based on chloroplast and nuclear markers

Zhu

Gao

Fougère‐Danezan

2015

Molecular Phylogenetics and Evolution

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“…Where many species in a genus have the same chromosome numbers, differences in nuclear DNA content are often present and have proven to be very effective in delimiting infrageneric divisions in a number of taxa (Ohri 1998). Genome size has been demonstrated to often vary a factor 1.5-3 between taxa with identical chromosome numbers (Ohri 1998;Yokoya et al 2000;Zonneveld 2001;Zonneveld and van Iren 2001;Ellul et al 2002;Zonneveld et al 2003a, b;Hirsch et al 2004: Albach andGreilhuber 2004;Zonneveld and Duncan 2006). Moreover, Greilhuber (1998Greilhuber ( , 2005 has clearly shown that intraspecific variation of genome size is much less than assumed.…”

Section: Introductionmentioning

confidence: 99%

The systematic value of nuclear DNA content for all species of Narcissus L. (Amaryllidaceae)

Zonneveld

2008

Plant Syst Evol

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The taxonomy of all species of Narcissus (Amaryllidaceae), an important horticultural crop, has not been investigated recently. As a new approach, genome size was determined by flow cytometry with propidium iodide from 375 accessions. The somatic nuclear DNA contents (2C) were shown to range from 14 to 38 pg for the diploids. Narcissus assoanus and N. gaditanus are, based on their nuclear DNA content, removed from section Apodanthi and placed in a new section Juncifolii. The different ploidy levels and species involved were entangled for N. ''fernandesii'' s.l. and a new allotetraploid form is named here. Section Pseudonarcissus was much more heterogeneous in nuclear DNA content than expected. Sixty-five accessions of N. pseudonarcissus possessed, with 23.7 pg, similar amounts of DNA. However, several species from this section were clearly distinctive in nuclear DNA content. It runs from the diploid N. primigenius with 21.7 pg to the also diploid N. nevadensis with 38.2 pg. Also N. abscissus and N. moleroi are with about 26 pg clearly different from N. pseudonarcissus. For the first time, in 11 accessions, hexaploidy was found in N. pseudonarcissus ssp. bicolor. A new section Nevadensis with 30-39 pg of nuclear DNA was split off from the section Pseudonarcissus with now 21-27 pg. A nonoploid N. dubius with 96.3 pg has by far the highest amount of nuclear DNA and can be calculated to have the highest ploidy ever reported in Narcisssus. The total number of Narcissus species was determined as 36, nine more than in Flora Europaea and they were divided up in two subgenera and 11 sections. Flow cytometry is shown to produce easily obtainable and original systematic data that lead to new insights. Genome size or C-value turns out to be one of the most salient features to define the status of the species in the genus Narcissus.

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“…Thus, the newest research trend on Rosa genus is focused on phylogenetic relationships among taxa based on chloroplast DNA sequences, nuclear DNA, or microsatellite analysis (e.g., [11,[31][32][33]). However, there is still a lack in basic descriptions of morphological similarities and differences among Rosa species which might be helpful in classical taxonomic approach.…”

Section: Digital Signaturementioning

confidence: 99%

Taxonomic significance of achene morphology of selected Rosa taxa (Rosaceae) occurring in Poland

Jagodziński¹,

Maciejewska-Rutkowska²,

Wrońska‐Pilarek³

et al. 2016

Acta Soc Bot Pol

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Achenes of roses were rarely studied and the studies were focused on anatomical research, mainly on pericarp structure and its development. We investigated the achene morphology by light-and scanning electron microscopy (LM and SEM) of 17 Rosa taxa from three sections (R. gallica from Gallicanae section, R. pendulina and R. rugosa from Rosa section, and R. agrestis, R. canina, R. canina var. corymbifera, R. dumalis, R. dumalis var. caesia, R. inodora, R. jundzillii, R. micrantha, R. rubiginosa, R. sherardii, R. ×subcanina, R. tomentosa, R. villosa, R. zalana from Caninae section). Eight quantitative and eight qualitative features were examined based on 9181 achenes, in total. Average achene size ranged from 4.37 to 5.39 mm in length and from 2.57 to 3.32 mm in width. The lowest morphological variability among the examined taxa was found in R. canina var. corymbifera, and the highest in R. gallica, R. inodora, and R. sherardii. The most diagnostic features of the achenes studied were suture (visible or invisible), presence or absence of hairs, hairs distribution and density, the exocarp sculpture and cuticle pattern type (we have distinguished four exocarp sculpture and three cuticle pattern types), and length. Qualitative achene features have significantly higher diagnostic value than quantitative ones. Taxonomical value of these features is quite high on the species and section level. Our study has shown that the previously mentioned morphological features of achenes can be used as valuable, additional diagnostic features in delimitation of Rosa taxa at the species and section level. Based on the morphological features of achenes, a determination key for all Rosa taxa studied was created.

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Nuclear DNA Amounts in Roses

Cited by 148 publications

References 16 publications

Phylogeny of Rosa sections Chinenses and Synstylae (Rosaceae) based on chloroplast and nuclear markers

Phylogeny of Rosa sections Chinenses and Synstylae (Rosaceae) based on chloroplast and nuclear markers

The systematic value of nuclear DNA content for all species of Narcissus L. (Amaryllidaceae)

Taxonomic significance of achene morphology of selected Rosa taxa (Rosaceae) occurring in Poland

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