Las especies del género Axonopus (Poaceae: Panicoideae: Paspaleae) de Colombia

Cañas, Diego Giraldo

doi:10.18257/raccefyn.48

Cited by 3 publications

(2 citation statements)

References 61 publications

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“…A. fissifolius is a species considered as cespitosa and may have stolons, with stems ranging from 15 to 120 cm in height, classified as simple, or sometimes, branchy when close to the base (Smith et al, 1982). The genus Axonopus comprises plants that are generally perennial, rarely annual, stoloniferous or rhizomatous and of a creeping nature (Giraldo-Cañas, 2012).…”

Section: /9mentioning

confidence: 99%

Phytosociology and cover analysis in the suppression of weeds from an Amazonian agrosystem

Gama

Leite

Pinheiro

et al. 2020

Agraria

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Weeds can occur in cultivated areas, competing with crops and causing considerable losses. Herbicides are the basis of weed control; however, they are questionable due to their possible negative impacts on human health and the environment. An alternative for controlling weeds is using cover plants. This study aimed to determine the floristic composition of weeds in an Amazonian agrosystem with cover plants and to evaluate the production of biomass, the soil cover rate and the weed suppression potential of cover plants. The experimental design was in randomized blocks, in a 4 x 2 factorial scheme. The factors under study were the cover species (Brachiaria ruziziensis, Canavalia ensiformis, Mucuna deeringiana) and the control group that consisted of weeds, evaluated during two agricultural years (2017 and 2018), with four replicates. Digitaria horizontalis was the most important weed species and was completely suppressed by B. ruziziensis. This cover type had a large production of biomass, greater coverage of the soil and high suppression of weeds in the Amazonian agrosystem.

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Section: /9mentioning

confidence: 99%

Phytosociology and cover analysis in the suppression of weeds from an Amazonian agrosystem

Gama

Leite

Pinheiro

et al. 2020

Agraria

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“…Infrageneric categories for Axonopus were based exclusively on morphological features of Rodriguésia 74: e00502022. 2023 inflorescences, being recognized four sections, five series, and three subseries (Chase 1906(Chase , 1911Black 1963;Giraldo-Cañas 2000).…”

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confidence: 99%

Nomenclatural updates on names linked to the genus Axonopus for the Brazilian flora (Poaceae, Panicoideae, Paspaleae)

2023

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A nomenclatural update for 20 names related to the genus Axonopus for the Brazilian flora is here presented. Axonopus comprises around 90, mostly New World, species characterized by having solitary spikelets in an inverted position. In order to stabilize the nomenclature and, based on thorough study of original collections and pertinent literature, we designated lectotypes for nine names, of which three are second-step lectotypes. We also corrected to lectotypes erroneous applications, in previous contributions, of the term “holotype” (for four names), clarified three cases in which lectotypification is not required, as well as discussed four situations of uncertainty.

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Molecular Phylogeny of Axonopus (Poaceae, Panicoideae, Paspaleae): Monophyly, Synapomorphies, and Taxonomic Implications for Infrageneric Classification and Species Complexes

Delfini

Acosta

Souza

et al. 2020

annals

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Axonopus P. Beauv. comprises nearly 90, mostly New World, species characterized by having spikelets with the inverse position (i.e., the backs of the upper glume and the upper lemma turned away from the rachis). The genus has been divided into four sections, five series, and three subseries, based exclusively on morphological features. Previous phylogenetic analyses based on a limited sampling of species showed Axonopus to be a monophyletic genus. In this study we increased the number of species sampled (46 species in the combined tree) and sequenced four DNA regions (external transcribed spacer [ETS], internal transcribed spacer [ITS], trnL-F, and ndhF). We tested the monophyly of Axonopus and its traditional infrageneric categories using parsimony, likelihood, and Bayesian inference. Additionally, we performed ancestral character state reconstructions of 45 morphological characters to infer autapomorphies of the species and synapomorphies for the genus and clades. Our findings confirmed Axonopus as a monophyletic genus only when Centrochloa Swallen and Ophiochloa Filg., Davidse & Zuloaga are included within it. Our analyses also showed that, with the exception of section Lappagopsis, infrageneric categories from previous classifications of the genus are artificial. Twenty-one morphological character states were identified as potential autapomorphies; two were reconstructed as potential synapomorphies for Axonopus, whereas 12 were reconstructed as potential synapomorphies for specific clades within the genus. Further molecular analyses, including sequencing of unlinked nuclear genes, are needed in order to reach a robust phylogenetic classification of the genus.

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Las especies del género Axonopus (Poaceae: Panicoideae: Paspaleae) de Colombia

Cited by 3 publications

References 61 publications

Phytosociology and cover analysis in the suppression of weeds from an Amazonian agrosystem

Phytosociology and cover analysis in the suppression of weeds from an Amazonian agrosystem

Nomenclatural updates on names linked to the genus Axonopus for the Brazilian flora (Poaceae, Panicoideae, Paspaleae)

Molecular Phylogeny of Axonopus (Poaceae, Panicoideae, Paspaleae): Monophyly, Synapomorphies, and Taxonomic Implications for Infrageneric Classification and Species Complexes

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