INVESTIGADORES
NAGAHAMA Nicolas
artículos
Título:
Taxa delimitation in the Andropogon lateralis complex (Poaceae) in southern South America based on morphometrical analysis
Autor/es:
NICOLÁS NAGAHAMA; ANA M. ANTON; GUILLERMO A. NORRMANN
Revista:
SYSTEMATIC BOTANY
Editorial:
AMER SOC PLANT TAXONOMISTS
Referencias:
Lugar: Laramie; Año: 2014 vol. 39 p. 804 - 813
ISSN:
0363-6445
Resumen:
In the tribe Andropogoneae, morphological variation is remarkable, mainly in theinflorescence, on the pair of spikelets, which are the core elements of the inflorescence. The genusAndropogon includes the Andropogon lateralis complex, which is distributed primarily in South and Central America, comprising approximately twelve taxa and inter-specific hybrids. The aim of this study was to assess morphological variation in the A. lateralis complex through morphometricanalyses of specimens from natural populations. For this purpose, univariate ANOVA, as well asprincipal component analysis and discriminant analysis of 19 morphological variables ofsynflorescences, were performed revealing differences between species and interspecific hybrids. The selected diagnostic traits of species and hybrids based on quantitative characters of the synflorescences provided a valuable tool for taxonomic studies in the genus. The results obtained made it possible to generate the first identification key that includes both species and hybrids of the A. lateralis complex for South America.
