Results 61 to 70 of about 13,037 (265)

A Phylogenetic Analysis of the Genus Fragaria (Strawberry) Using Intron-Containing Sequence from the ADH-1 Gene [PDF]

open access: yes, 2014
The genus Fragaria encompasses species at ploidy levels ranging from diploid to decaploid. The cultivated strawberry, Fragaria×ananassa, and its two immediate progenitors, F. chiloensis and F. virginiana, are octoploids.
Davis, Thomas M.   +3 more
core   +1 more source

Species concepts and relationships in wild and cultivated potatoes [PDF]

open access: yes
Wild and cultivated potatoes (Solanum section Petota) present challenges to taxonomists arising from lack of clearly defined morphological character differences among many species, phenotypic plasticity, a range of ploidy levels from diploid to hexaploid,
Berg, R.G., van den   +3 more
core   +2 more sources

Incongruence between chloroplast and species phylogenies in eucalyptus subgenus monocalyptus (Myrtaceae) [PDF]

open access: yes, 1999
Seventy-eight polymorphic cpDNA (chloroplast DNA) characters were found in 13 closely related taxa from Eucalyptus series Amygdalinae (subgenus Monocalyptus) and seven potential outgroup taxa.
McKinnon, GE   +3 more
core   +1 more source

Introgression despite minimal hybridization: mating system modulates phenotypic associations with introgression in Clarkia

open access: yesNew Phytologist, Volume 250, Issue 4, Page 2619-2633, May 2026.
Summary Secondary contact between incipient species provides the opportunity to understand how trait divergence restricts gene flow. While mating system transitions are particularly common and involve a suite of phenotypic changes, the extent to which these changes influence gene flow during speciation is poorly understood.
Shelley A. Sianta   +4 more
wiley   +1 more source

Molecular phylogeny of Muscari (Asparagaceae) inferred from cpDNA sequences

open access: yesBiologia, 2018
In this study, we tried to figure out phylogenetic relationships and taxonomical positions of closely related Muscari species. Four different cpDNA regions including both coding and non-coding ones, namely, matK, trnT(UGU)-trnL(UAA) intergenic spacer (IGS), trnL(UAA) intron and trnL(UAA)-F(GAA) IGS, were employed to determine the exact circumscription ...
Dizkirici, Ayten   +3 more
openaire   +3 more sources

Koenigia bingchachaensis (Polygonaceae), a Remarkable New Species from the Alpine Subnival of Bingchacha, Zayü, Xizang, China

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
Koenigia bingchachaensis Bo Xu & H. Sun (Polygonaceae), a remarkable new species from the alpine subnival of Zayü County, Xizang, China, is described and illustrated. The integrative evidence from morphology and phylogenetics confirms the status of K. bingchachaensis as a new species, which also highlights the ongoing discovery of unique biodiversity ...
Bo Xu, Hang Sun, Dong Luo
wiley   +1 more source

DNA barcoding as a molecular tool to track down mislabeling and food piracy [PDF]

open access: yes, 2015
DNA barcoding is a molecular technology that allows the identification of any biological species by amplifying, sequencing and querying the information from genic and/or intergenic standardized target regions belonging to the extranuclear genomes ...
Barcaccia, Gianni   +2 more
core   +2 more sources

High levels of gene flow and genetic diversity in Irish populations of Salix caprea L. inferred from chloroplast and nuclear SSR markers [PDF]

open access: yes, 2014
peer-reviewedBackground Salix caprea is a cold-tolerant pioneer species that is ecologically important in Europe and western and central Asia.
Douglas, Gerry C.   +3 more
core   +1 more source

Phylogeny of subtribe Gonolobinae (Apocynaceae‐Asclepiadoideae) based on molecular and morphological data with a revised generic classification

open access: yesTAXON, Volume 75, Issue 2, April 2026.
Abstract The presently most densely sampled molecular phylogeny of the widespread New World subtribe Gonolobinae is presented, including about 35% of the ca. 520 species. Sampling focused on an even representation of the three main areas of total Gonolobinae distribution, South America, Central/North America, and the West Indian Islands, and the ...
Sigrid Liede‐Schumann   +4 more
wiley   +1 more source

Species Identification of Licorice Using nrDNA and cpDNA Genetic Markers

open access: yesBiological and Pharmaceutical Bulletin, 2007
For the accurate identification of medicinal licorice species, nucleotide sequences of four types of DNA regions were researched for 205 specimens, including three species used as licorice: Glycyrrhiza uralensis, Glycyrrhiza glabra, and Glycyrrhiza inflata.
Kenji, Kondo   +6 more
openaire   +3 more sources

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