Classification of argentine maize landraces in heterotic groups
The genetic diversity of maize (Zea mays L) is a valuable and strategic natural resource that plays a key role in the breeding progress. However, exploitation of genetic variability from landraces has not reached a significant level of utilization in breeding programs in Argentina yet. In order to e...
| Main Authors: | , , , , , |
|---|---|
| Format: | Artículo |
| Language: | Inglés |
| Published: |
Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria
2022
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/11426 https://journals-crea.4science.it/index.php/maydica/article/view/622 |
| _version_ | 1855484779850366976 |
|---|---|
| author | Delucchi, Carla Eyherabide, Guillermo Lorea, Roberto Daniel Presello, Daniel Alberto Otegui, María Elena López, César G. |
| author_browse | Delucchi, Carla Eyherabide, Guillermo Lorea, Roberto Daniel López, César G. Otegui, María Elena Presello, Daniel Alberto |
| author_facet | Delucchi, Carla Eyherabide, Guillermo Lorea, Roberto Daniel Presello, Daniel Alberto Otegui, María Elena López, César G. |
| author_sort | Delucchi, Carla |
| collection | INTA Digital |
| description | The genetic diversity of maize (Zea mays L) is a valuable and strategic natural resource that plays a key role in the breeding progress. However, exploitation of genetic variability from landraces has not reached a significant level of utilization in breeding programs in Argentina yet. In order to establish their breeding potential, the best 15 out of a group of about 300 landraces from Argentina, were evaluated for various agronomic characters in testcrosses with five lines representing different heterotic groups. Testcrosses were evaluated in nine environments during two growing seasons. A factorial array of those landraces and tester lines was used. Differences for landraces, testers, and landrace x tester interactions were detected for ear diameter and length, ear attachment and plant height, and grain yield. Yield data were further analyzed following additive main effects (landrace and tester) and multiplicative interaction (landrace x tester) models. The first two principal components were significant and accounted for 67% of that interaction. The first axis was consistent with the Argentine flint vs. US dent (Mo17), and US dent (B73) vs. US dent (Mo17) heterotic patterns. The second axis exhibited a contrast between Argentine flint and US dent (B73 or B73 derived line) heterotic groups. The first two principal components of the landrace x tester interaction and mean performance of testcrosses were considered to identify eight landraces as parents of three composite populations. |
| format | Artículo |
| id | INTA11426 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria |
| publisherStr | Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria |
| record_format | dspace |
| spelling | INTA114262022-03-17T17:28:07Z Classification of argentine maize landraces in heterotic groups Delucchi, Carla Eyherabide, Guillermo Lorea, Roberto Daniel Presello, Daniel Alberto Otegui, María Elena López, César G. Maíz Recursos Genéticos Mejoramiento Genético Maize Genetic Resources Genetic Improvement Grupos Heteróticos Maize Landraces Testcross Evaluation The genetic diversity of maize (Zea mays L) is a valuable and strategic natural resource that plays a key role in the breeding progress. However, exploitation of genetic variability from landraces has not reached a significant level of utilization in breeding programs in Argentina yet. In order to establish their breeding potential, the best 15 out of a group of about 300 landraces from Argentina, were evaluated for various agronomic characters in testcrosses with five lines representing different heterotic groups. Testcrosses were evaluated in nine environments during two growing seasons. A factorial array of those landraces and tester lines was used. Differences for landraces, testers, and landrace x tester interactions were detected for ear diameter and length, ear attachment and plant height, and grain yield. Yield data were further analyzed following additive main effects (landrace and tester) and multiplicative interaction (landrace x tester) models. The first two principal components were significant and accounted for 67% of that interaction. The first axis was consistent with the Argentine flint vs. US dent (Mo17), and US dent (B73) vs. US dent (Mo17) heterotic patterns. The second axis exhibited a contrast between Argentine flint and US dent (B73 or B73 derived line) heterotic groups. The first two principal components of the landrace x tester interaction and mean performance of testcrosses were considered to identify eight landraces as parents of three composite populations. EEA Pergamino Fil: Delucchi, Carla. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento Laboratorio Biotecnología; Argentina Fil: Eyhérabide, Guillermo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Laboratorio Biotecnología; Argentina Fil: Lorea, Roberto D. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina Fil: Presello, Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina Fil: Otegui, María Elena. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina Fil: López, César G. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias; Argentina 2022-03-17T17:17:43Z 2022-03-17T17:17:43Z 2012 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/11426 https://journals-crea.4science.it/index.php/maydica/article/view/622 2279-8013 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria Maydica 57 (1) : 26-33 (2012) |
| spellingShingle | Maíz Recursos Genéticos Mejoramiento Genético Maize Genetic Resources Genetic Improvement Grupos Heteróticos Maize Landraces Testcross Evaluation Delucchi, Carla Eyherabide, Guillermo Lorea, Roberto Daniel Presello, Daniel Alberto Otegui, María Elena López, César G. Classification of argentine maize landraces in heterotic groups |
| title | Classification of argentine maize landraces in heterotic groups |
| title_full | Classification of argentine maize landraces in heterotic groups |
| title_fullStr | Classification of argentine maize landraces in heterotic groups |
| title_full_unstemmed | Classification of argentine maize landraces in heterotic groups |
| title_short | Classification of argentine maize landraces in heterotic groups |
| title_sort | classification of argentine maize landraces in heterotic groups |
| topic | Maíz Recursos Genéticos Mejoramiento Genético Maize Genetic Resources Genetic Improvement Grupos Heteróticos Maize Landraces Testcross Evaluation |
| url | http://hdl.handle.net/20.500.12123/11426 https://journals-crea.4science.it/index.php/maydica/article/view/622 |
| work_keys_str_mv | AT delucchicarla classificationofargentinemaizelandracesinheteroticgroups AT eyherabideguillermo classificationofargentinemaizelandracesinheteroticgroups AT lorearobertodaniel classificationofargentinemaizelandracesinheteroticgroups AT presellodanielalberto classificationofargentinemaizelandracesinheteroticgroups AT oteguimariaelena classificationofargentinemaizelandracesinheteroticgroups AT lopezcesarg classificationofargentinemaizelandracesinheteroticgroups |