Kolář et al. compare karyological and ecological variation of the Galium pusillum aggregate in deglaciated northern and unglaciated central Europe.
Tag - flow cytometry
botanyone
High ploidy diversity and cytotype distribution in a biodiversity hotspot
The Greater Cape Floristic Region of southern Africa is a world biodiversity hotspot that has traditionally been considered depauperate in polyploid plants.
AJ Cann
Genome size variations in polyploid Allium oleraceum
The occurrence and extent of genome size variation below the species level are currently poorly analysed.
Evolution of genome size in Carex
Knowledge of evolution of genome size in species with holocentric chromosomes is limited. Lipnerová et al. study genome size and base composition in the holocentric genus Carex (Cyperaceae) in relation to chromosome...
DNA content for 407 plant species from the USA
The genome sizes of plants represent a key character often associated with other traits. Bai et al. use flow cytometry to provide prime C-values for 514 taxa. Most of these (407) are new reports, including 129 genera...
Genome size variation in a polyploid complex
Whole-genome duplication, or polyploidy, is a common and repeated process in angiosperms, and contributes to variation in genome size. McIntyre assesses ploidy and genome size for 78 populations within the Claytonia...
Minority cytotypes in fragrant orchids
Patterns of ploidy variation can provide useful insights into the evolutionary mechanisms that shape the dynamics of plant systems showing ploidy diversity. Trávníček et al. examine cytotype variation in fragrant...
Improved method for estimating pollen DNA content
Kron and Husband describe a simple method for extracting pollen nuclei for measuring DNA content with flow cytometry, involving the bursting of pollen through a nylon mesh. The method compares favourably to other common...
Genome size in Narcissus hybrids
Although natural hybridization in the genus Narcissus (daffodils) is not infrequent, that between phylogenetically distant species differing in basic chromosome number involves significant genome changes. Using PI and...
Chromosome number and fruit size in Actinidia
Some otherwise promising selections of Actinidia chinensis (kiwifruit) have fruit that are too small for successful commercialization. Wu et al. induce chromosome doubling using colchicine and measure subsequent fruit...
Reticulate evolution and triploidy in Diphasiastrum
Diphasiastrum species have been assumed to produce homoploid hybrids whose reproductive competence is still a matter of debate. Using flow cytometry, Bennert et al. demonstrate that the three Central European primary...
Tetraploidization in apomictic citrus
The gene pool of Citrus and related genera of Aurantioideae is essentially diploid but tetraploid plants are frequently encountered in seedlings of diploid apomictic genotypes. Aleza et al. demonstrate that...
Cytogeography of Pilosella echioides
There have been significant advances recently in understanding the processes that operate in mixed-ploidy populations to maintain the coexistence of multiple cytotypes. Trávníček et al. examine frequent ploidy...
Nuclear DNA amounts in 2221 angiosperm species
In the largest ever compilation of angiosperm DNA amounts, C-values for 2221 species from 152 original references (including 1860 species not previously collated), are listed by Bennett and Leitch. These data contain...
