Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits

Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (rc) and heritability (h2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most...

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Autores principales: Aulicino, Mónica Beatriz, Arturi, Miguel Jacinto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Agrarias
Bromus catharticus
Constancy
Environmental variation
Genetic variation
Heritability
Phenotypic plasticity
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83581
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83581
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Bromus catharticus
Constancy
Environmental variation
Genetic variation
Heritability
Phenotypic plasticity
spellingShingle Ciencias Agrarias
Bromus catharticus
Constancy
Environmental variation
Genetic variation
Heritability
Phenotypic plasticity
Aulicino, Mónica Beatriz
Arturi, Miguel Jacinto
Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits
topic_facet Ciencias Agrarias
Bromus catharticus
Constancy
Environmental variation
Genetic variation
Heritability
Phenotypic plasticity
description Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (rc) and heritability (h2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of rc and h2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach rc values higher than 1 and h2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.
format Articulo
Articulo
author Aulicino, Mónica Beatriz
Arturi, Miguel Jacinto
author_facet Aulicino, Mónica Beatriz
Arturi, Miguel Jacinto
author_sort Aulicino, Mónica Beatriz
title Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits
title_short Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits
title_full Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits
title_fullStr Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits
title_full_unstemmed Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits
title_sort phenotypic diversity in argentinian populations of bromus catharticus (poaceae): genetic and environmental components of quantitative traits
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/83581
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