Genetic and morphological characterization of Acroceras macrum Stapf

Acroceras macrum is a warm-season grass used for pastures, and it has high nutritive value. The scarce genetic and reproductive information about this grass is limiting its breeding for forage. The objective of this research was to determine the number of genotypes and cytotypes present in a col...

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Detalles Bibliográficos
Autores principales: Ferrari Usandizaga, Silvana Consuelo, Brugnoli, Elsa Andrea, Weiss, A. I., Zilli, Alex Leonel, Schedler, Mara, Pagano, E. M., Martínez, Eric Javier, Acuña, Carlos Alberto
Formato: Artículo
Lenguaje:Inglés
Publicado: Wiley 2021
Materias:
Acroceras
Forage breeding
Genetic characterization
Nile grass
Polyploidy
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28611
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28611
record_format dspace
spelling I48-R184-123456789-286112025-02-11T11:32:46Z Genetic and morphological characterization of Acroceras macrum Stapf Ferrari Usandizaga, Silvana Consuelo Brugnoli, Elsa Andrea Weiss, A. I. Zilli, Alex Leonel Schedler, Mara Pagano, E. M. Martínez, Eric Javier Acuña, Carlos Alberto Acroceras Forage breeding Genetic characterization Nile grass Polyploidy Acroceras macrum is a warm-season grass used for pastures, and it has high nutritive value. The scarce genetic and reproductive information about this grass is limiting its breeding for forage. The objective of this research was to determine the number of genotypes and cytotypes present in a collection established in Argentina, and to estimate the diversity of this species based on molecular markers, and morphological and agronomic characteristics. The number of genotypes among forty-seven accessions was determined using ISSR markers. The identified genotypes were further characterized for ploidy levels. In addition, the genetic distances among them were estimated with ISSR markers. They were also propagated and planted into the field following a randomized complete block design with four replications, and a group of sixteen morphological and agronomic variables were evaluated. A total of twenty-seven genotypes were identified in this collection; twenty-two genotypes were tetraploid (2n = 4x = 36) and five were hexaploid (2n = 6x = 54). These two cytotypes were found clearly separated by both genetic and phenotypic characteristics. Above-ground biomass, internode length, initial growth and number of spikelets per inflorescence were the most variable traits. The high diversity present in this collection will allow for the initiation of a breeding programme for A. macrum. 2021-09-09T14:51:55Z 2021-09-09T14:51:55Z 2014-04-03 Artículo Ferrari Usandizaga, Silvana Consuelo, et al., 2014. Genetic and morphological characterization of Acroceras macrum Stapf. Grass and Forage Science. Nueva Jersey: Wiley, vol. 70, no. 4, p. 1- 10. ISSN 1365-2494. 1365-2494 http://repositorio.unne.edu.ar/handle/123456789/28611 eng https://doi.org/10.1111/gfs.12148 openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 1- 10 application/pdf Wiley Grass and Forage Science, vol. 70, no. 4, p. 1- 10.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Acroceras
Forage breeding
Genetic characterization
Nile grass
Polyploidy
spellingShingle Acroceras
Forage breeding
Genetic characterization
Nile grass
Polyploidy
Ferrari Usandizaga, Silvana Consuelo
Brugnoli, Elsa Andrea
Weiss, A. I.
Zilli, Alex Leonel
Schedler, Mara
Pagano, E. M.
Martínez, Eric Javier
Acuña, Carlos Alberto
Genetic and morphological characterization of Acroceras macrum Stapf
topic_facet Acroceras
Forage breeding
Genetic characterization
Nile grass
Polyploidy
description Acroceras macrum is a warm-season grass used for pastures, and it has high nutritive value. The scarce genetic and reproductive information about this grass is limiting its breeding for forage. The objective of this research was to determine the number of genotypes and cytotypes present in a collection established in Argentina, and to estimate the diversity of this species based on molecular markers, and morphological and agronomic characteristics. The number of genotypes among forty-seven accessions was determined using ISSR markers. The identified genotypes were further characterized for ploidy levels. In addition, the genetic distances among them were estimated with ISSR markers. They were also propagated and planted into the field following a randomized complete block design with four replications, and a group of sixteen morphological and agronomic variables were evaluated. A total of twenty-seven genotypes were identified in this collection; twenty-two genotypes were tetraploid (2n = 4x = 36) and five were hexaploid (2n = 6x = 54). These two cytotypes were found clearly separated by both genetic and phenotypic characteristics. Above-ground biomass, internode length, initial growth and number of spikelets per inflorescence were the most variable traits. The high diversity present in this collection will allow for the initiation of a breeding programme for A. macrum.
format Artículo
author Ferrari Usandizaga, Silvana Consuelo
Brugnoli, Elsa Andrea
Weiss, A. I.
Zilli, Alex Leonel
Schedler, Mara
Pagano, E. M.
Martínez, Eric Javier
Acuña, Carlos Alberto
author_facet Ferrari Usandizaga, Silvana Consuelo
Brugnoli, Elsa Andrea
Weiss, A. I.
Zilli, Alex Leonel
Schedler, Mara
Pagano, E. M.
Martínez, Eric Javier
Acuña, Carlos Alberto
author_sort Ferrari Usandizaga, Silvana Consuelo
title Genetic and morphological characterization of Acroceras macrum Stapf
title_short Genetic and morphological characterization of Acroceras macrum Stapf
title_full Genetic and morphological characterization of Acroceras macrum Stapf
title_fullStr Genetic and morphological characterization of Acroceras macrum Stapf
title_full_unstemmed Genetic and morphological characterization of Acroceras macrum Stapf
title_sort genetic and morphological characterization of acroceras macrum stapf
publisher Wiley
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28611
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