Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies
Thirteen genotypes of Bromus catharticus (prairie grass) were evaluated for forage production over three years using completely randomized trials with six replicates. The genotype x environment interaction was statistically significant and indicates that the behavior of genotypes differs over time....
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Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
2012
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oai:scielo:S0718-162020120002000092012-10-24Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologiesAbbott,LilianaFilippini,SusanaDelfino,HugoPistorale,Susana Bromus forage production genotype-environment interaction phenotypic stability prairie grass Thirteen genotypes of Bromus catharticus (prairie grass) were evaluated for forage production over three years using completely randomized trials with six replicates. The genotype x environment interaction was statistically significant and indicates that the behavior of genotypes differs over time. Once this interaction was detected, we used three methodologies to assess the stability of genotypes: Wricke's ecovalence, the Lin and Binns index, and the Eberhart and Russell model. The methods of Lin and Binns and Eberhart and Russell indicate that genotypes 11, 9, 3 and 4 are stable. They also rule out possible selection of genotypes 2, 10, 1 and 12 for lack of stability or poor adaptation. The correlation among these indices was statistically significant (r=0.61). When using Wricke's ecovalence, there is agreement among the indices for the selection of genotypes 9 and 4, which show good stability. There is no agreement with the other two methods for ruling out unstable genotypes. Considering the three methodologies used, the Lin and Binns index is easiest to apply and interpret because higher productivity always correlates with greater stability, and there are no restrictions on the use of regression. However, it is necessary to accumulate more data prior to the widespread use of these methods.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.39 n.2 20122012-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200009en10.4067/S0718-16202012000200009 |
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Bromus forage production genotype-environment interaction phenotypic stability prairie grass |
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Bromus forage production genotype-environment interaction phenotypic stability prairie grass Abbott,Liliana Filippini,Susana Delfino,Hugo Pistorale,Susana Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies |
description |
Thirteen genotypes of Bromus catharticus (prairie grass) were evaluated for forage production over three years using completely randomized trials with six replicates. The genotype x environment interaction was statistically significant and indicates that the behavior of genotypes differs over time. Once this interaction was detected, we used three methodologies to assess the stability of genotypes: Wricke's ecovalence, the Lin and Binns index, and the Eberhart and Russell model. The methods of Lin and Binns and Eberhart and Russell indicate that genotypes 11, 9, 3 and 4 are stable. They also rule out possible selection of genotypes 2, 10, 1 and 12 for lack of stability or poor adaptation. The correlation among these indices was statistically significant (r=0.61). When using Wricke's ecovalence, there is agreement among the indices for the selection of genotypes 9 and 4, which show good stability. There is no agreement with the other two methods for ruling out unstable genotypes. Considering the three methodologies used, the Lin and Binns index is easiest to apply and interpret because higher productivity always correlates with greater stability, and there are no restrictions on the use of regression. However, it is necessary to accumulate more data prior to the widespread use of these methods. |
author |
Abbott,Liliana Filippini,Susana Delfino,Hugo Pistorale,Susana |
author_facet |
Abbott,Liliana Filippini,Susana Delfino,Hugo Pistorale,Susana |
author_sort |
Abbott,Liliana |
title |
Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies |
title_short |
Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies |
title_full |
Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies |
title_fullStr |
Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies |
title_full_unstemmed |
Stability analysis of forage production in Bromus catharticus (prairie grass) using three methodologies |
title_sort |
stability analysis of forage production in bromus catharticus (prairie grass) using three methodologies |
publisher |
Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal |
publishDate |
2012 |
url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200009 |
work_keys_str_mv |
AT abbottliliana stabilityanalysisofforageproductioninbromuscatharticusprairiegrassusingthreemethodologies AT filippinisusana stabilityanalysisofforageproductioninbromuscatharticusprairiegrassusingthreemethodologies AT delfinohugo stabilityanalysisofforageproductioninbromuscatharticusprairiegrassusingthreemethodologies AT pistoralesusana stabilityanalysisofforageproductioninbromuscatharticusprairiegrassusingthreemethodologies |
_version_ |
1714202140474343424 |