Previous work on holocentric chromosomes in the angiosperm genus Carex demonstrates that many of the traditional sections are marked by different ranges of chromosome number, suggesting phylogenetic autocorrelation. It has been hypothesized that shifting constraints on chromosome rearrangements may limit the potential for hybridization among lineages, promoting speciation. In this study, we eva...

Plants are a major factor influencing methane emissions from wetlands, along with environmental parameters such as water table, temperature, pH, nutrients and soil carbon substrate. We conducted a field experiment to study how different plant species influence methane emissions from a wetland in Switzerland. The top 0.5 m of soil at this site had been removed five years earlier, leaving a subst...

To prepare a database of germplasm diversity in the Indian sedges, cytological studies were initiated on population basis from Punjab plains and adjoining areas. About 2000 taxonomical species have been recorded for major genus Carex but the cytological picture is quite dismal at the world level with chromosome records for only 579 species and 14 out of about 148 Indian species. The chromosome ...

A newly developed random set model has been applied to model the extensional uncertainty of a wetland patch. The objective of this research is to explore the corresponding variables collected on the ground for validating the uncertain image objects and to report the quality of the random set modeling. The independent samples t-test and a correlation analysis have been used to identify the main ...

Karyotypic evolution is a prominent feature in the diversification of many plants and animals, yet the role that chromosomal changes play in the process of diversification is still debated. At the diploid level, chromosome fission and/or fusion are necessary components of chromosomal structural change associated with diversification. Yet the genomic features required for these events remain unk...

Abstract This is the first work of a series thorough studies into taxonomy and systematics Carex in South America. Here, we present systematic placement, biogeographic insights, taxonomic accounts, formal typifications summarized distributions for 24 species subgenus Vignea with androgynous spikes continent. We performed phylogenetic study using barcode markers ETS, ITS matK to check placement ...

[This corrects the article DOI: 10.1371/journal.pone.0165430.].