Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters

The aim of this research was to evaluate the salinity tolerance in prairie grass populations at the seedling stage quantifying the variability and the influence of physiological traits related to it. Salinity tolerance, in Bromus catharticus Vahl (prairie grass) populations collected in different en...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Aulicino, Mónica Beatriz, Collado, Mónica B., Barca, Hernán, Molina, María del Carmen
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Agrarias
Bromus catahrticus
Prairie grass
Salinity tolerance
Population genetic variability
Path coefficient analysis
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/119274
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-119274
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 catahrticus
Prairie grass
Salinity tolerance
Population genetic variability
Path coefficient analysis
spellingShingle Ciencias Agrarias
Bromus catahrticus
Prairie grass
Salinity tolerance
Population genetic variability
Path coefficient analysis
Aulicino, Mónica Beatriz
Collado, Mónica B.
Barca, Hernán
Molina, María del Carmen
Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters
topic_facet Ciencias Agrarias
Bromus catahrticus
Prairie grass
Salinity tolerance
Population genetic variability
Path coefficient analysis
description The aim of this research was to evaluate the salinity tolerance in prairie grass populations at the seedling stage quantifying the variability and the influence of physiological traits related to it. Salinity tolerance, in Bromus catharticus Vahl (prairie grass) populations collected in different environments of the Pampean Phytogeography region (Argentine) was evaluated at the seedling stage, using controlled condition of temperature and light. It was adopted a completely randomized design using 3 plots with three plants each one per population and two levels of treatment: 0 mM and 100 mM NaCl. Morphological, biomass and membrane stability root and shoot traits were studied. A factorial ANOVA with interaction was estimated. Then one way ANOVA for all seedling traits in both treatments allowed estimating variance components, coefficient of genotypic determination (CGD) and variation index (VI). Comparisons between populations were made using Tukey test (at 5% of probability). Phenotypic correlations among traits were calculated and then a path coefficient analysis separated direct and indirect effects at 100 and 0 mM NaCl. No significant interactions “Population × Treatment” were found for any character. The saline stress caused a pairing in the population means for the most traits. Coefficients of variation were mainly higher when the seedlings grew without stress (0 mM) because it allowed a greater potential genotypic expression. The absence of significant interactions denotes a good homeostatic capacity of the prairie grass facing that abiotic stress. Leaf length, shoot length and root dry matter were the variables with the largest direct and indirect effects. Our results showed an increase for them at salt and demonstrated intraspecific variation, possibly in relation with the origin sites. Plants under stress showed a marked resilience, in order to quickly restore the same biomass allocation patterns that occur in non-stress environment.
format Articulo
Articulo
author Aulicino, Mónica Beatriz
Collado, Mónica B.
Barca, Hernán
Molina, María del Carmen
author_facet Aulicino, Mónica Beatriz
Collado, Mónica B.
Barca, Hernán
Molina, María del Carmen
author_sort Aulicino, Mónica Beatriz
title Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters
title_short Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters
title_full Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters
title_fullStr Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters
title_full_unstemmed Salinity tolerance in argentinean population of Bromus catharticus: variability and direct and indirect effects on seedling characters
title_sort salinity tolerance in argentinean population of bromus catharticus: variability and direct and indirect effects on seedling characters
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/119274
work_keys_str_mv AT aulicinomonicabeatriz salinitytoleranceinargentineanpopulationofbromuscatharticusvariabilityanddirectandindirecteffectsonseedlingcharacters
AT colladomonicab salinitytoleranceinargentineanpopulationofbromuscatharticusvariabilityanddirectandindirecteffectsonseedlingcharacters
AT barcahernan salinitytoleranceinargentineanpopulationofbromuscatharticusvariabilityanddirectandindirecteffectsonseedlingcharacters
AT molinamariadelcarmen salinitytoleranceinargentineanpopulationofbromuscatharticusvariabilityanddirectandindirecteffectsonseedlingcharacters
bdutipo_str Repositorios
_version_ 1764820448122503171

Ejemplares similares