Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments
The decrease of rainfall amount due to climate change, and the reduction of irrigation water caused by growing water demand for non-agricultural uses, emphasize the importance of breeding novel alfalfa varieties that are more tolerant to drought under rain-fed cropping or modest supplemental irrigat...
| Autores principales: | , , , , , , , , |
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| Formato: | Conferencia |
| Lenguaje: | Inglés |
| Publicado: |
2018
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/4152 http://www.worldalfalfacongress.org/resumenes/?lang=en |
| _version_ | 1855483365726093312 |
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| author | Annicchiarico, Paolo Nazzicari, Nelson Bouizgaren, Abdelaziz Hayek, Taoufik Laouar, Meriem Cornacchione, Monica Basigalup, Daniel Horacio Brummer, Edward Charles Pecetti, Luciano |
| author_browse | Annicchiarico, Paolo Basigalup, Daniel Horacio Bouizgaren, Abdelaziz Brummer, Edward Charles Cornacchione, Monica Hayek, Taoufik Laouar, Meriem Nazzicari, Nelson Pecetti, Luciano |
| author_facet | Annicchiarico, Paolo Nazzicari, Nelson Bouizgaren, Abdelaziz Hayek, Taoufik Laouar, Meriem Cornacchione, Monica Basigalup, Daniel Horacio Brummer, Edward Charles Pecetti, Luciano |
| author_sort | Annicchiarico, Paolo |
| collection | INTA Digital |
| description | The decrease of rainfall amount due to climate change, and the reduction of irrigation water caused by growing water demand for non-agricultural uses, emphasize the importance of breeding novel alfalfa varieties that are more tolerant to drought under rain-fed cropping or modest supplemental irrigation, and more tolerant to salt to exploit low-quality, saline irrigation water. A sharp need for such improved germplasm is emerging in the Mediterranean basin, where alfalfa plays a key role for forage production. Drought-tolerant cultivars are needed also elsewhere, for example in Argentina, where they could allow to expand westward the alfalfa rain-fed cropping. Alfalfa typically features very low rates of genetic yield gain (Annicchiarico et al. 2015a), urging the development of cost-efficient marker-based selection.
The multi-site yield testing of alfalfa varieties and landraces across countries of the western Mediterranean basin revealed outstanding genotype × environment (GE) interaction of cross-over type associated with three major types of target environments: i) rain-fed or irrigated environments featuring limited spring-summer water available and low salinity, ii) salt-stress environments, and iii) moisture-favorable environments (Annicchiarico et al. 2011). Eco-physiological research identified various mechanisms that contribute to specific-adaptation responses (Annicchiarico et al. 2013). Moderately wide cultivar adaptation may be desirable, given the wide year-to-year climatic variation of sites in this region.
A Mediterranean reference population of alfalfa was developed from elite germplasm within the ERA-Net project REFORMA. A genotype training set was sorted out from it, to verify the ability of genomic selection (Heffner et al. 2009) to predict breeding values for biomass yield across a range of widely-diversified cropping environments. Genotype breeding values were estimated according to responses of their half-sib progenies, as required by the crop outbred system (Annicchiarico et al. 2015a). The genotyping of parent genotypes was carried out by Genotyping-by-Sequencing (Elshire et al. 2011) after optimizing for alfalfa some elements of its protocol (Annicchiarico et al. 2017). Concurrently, the project verified the ability of managed-stress environments of Italy to predict genotype yield responses in distant agricultural environments, following earlier work showing good ability to predict cultivar responses across agricultural environments of Italy (Annicchiarico and Piano 2005). This study aimed to provide an initial assessment of the ability of genomic selection to predict breeding values in each cropping environment and across stress environments, on the basis of preliminary yield data and GBS-generated data. |
| format | Conferencia |
| id | INTA4152 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA41522022-10-17T13:52:22Z Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments Annicchiarico, Paolo Nazzicari, Nelson Bouizgaren, Abdelaziz Hayek, Taoufik Laouar, Meriem Cornacchione, Monica Basigalup, Daniel Horacio Brummer, Edward Charles Pecetti, Luciano Medicago Sativa Adaptation Drought Tolerance Genomes Phenotypes Adaptación Genomas Fenotipos The decrease of rainfall amount due to climate change, and the reduction of irrigation water caused by growing water demand for non-agricultural uses, emphasize the importance of breeding novel alfalfa varieties that are more tolerant to drought under rain-fed cropping or modest supplemental irrigation, and more tolerant to salt to exploit low-quality, saline irrigation water. A sharp need for such improved germplasm is emerging in the Mediterranean basin, where alfalfa plays a key role for forage production. Drought-tolerant cultivars are needed also elsewhere, for example in Argentina, where they could allow to expand westward the alfalfa rain-fed cropping. Alfalfa typically features very low rates of genetic yield gain (Annicchiarico et al. 2015a), urging the development of cost-efficient marker-based selection. The multi-site yield testing of alfalfa varieties and landraces across countries of the western Mediterranean basin revealed outstanding genotype × environment (GE) interaction of cross-over type associated with three major types of target environments: i) rain-fed or irrigated environments featuring limited spring-summer water available and low salinity, ii) salt-stress environments, and iii) moisture-favorable environments (Annicchiarico et al. 2011). Eco-physiological research identified various mechanisms that contribute to specific-adaptation responses (Annicchiarico et al. 2013). Moderately wide cultivar adaptation may be desirable, given the wide year-to-year climatic variation of sites in this region. A Mediterranean reference population of alfalfa was developed from elite germplasm within the ERA-Net project REFORMA. A genotype training set was sorted out from it, to verify the ability of genomic selection (Heffner et al. 2009) to predict breeding values for biomass yield across a range of widely-diversified cropping environments. Genotype breeding values were estimated according to responses of their half-sib progenies, as required by the crop outbred system (Annicchiarico et al. 2015a). The genotyping of parent genotypes was carried out by Genotyping-by-Sequencing (Elshire et al. 2011) after optimizing for alfalfa some elements of its protocol (Annicchiarico et al. 2017). Concurrently, the project verified the ability of managed-stress environments of Italy to predict genotype yield responses in distant agricultural environments, following earlier work showing good ability to predict cultivar responses across agricultural environments of Italy (Annicchiarico and Piano 2005). This study aimed to provide an initial assessment of the ability of genomic selection to predict breeding values in each cropping environment and across stress environments, on the basis of preliminary yield data and GBS-generated data. EEA Manfredi Fil: Annicchiarico, Paolo. Council for Agricultural Research and Economics. Research Centre for Fodder Crops and Dairy Productions; Italia Fil: Bouizgaren, Abdelaziz. Institut National de la Recherche Agronomique du Maroc. Centres Régionaux de Marrakech et de Rabat; Marruecos Fil: Hayek, Taoufik. Institut des Régions Arides de Médenine; Tunez Fil: Laouar, Meriem. Ecole Nationale Supérieure Agronomique; Argelia Fil: Cornacchione, Monica. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Basigalup, Daniel Horacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi. Grupo de Mejoramiento Genético de Alfalfa; Argentina Fil: Brummer, E. Charles. University of Georgia. Crop and Soil Science Depeparment. Center for Applied Genetic Technologies; Estados Unidos Fil: Pecetti, Luciano. Council for Agricultural Research and Economics. Research Centre for Fodder Crops and Dairy Productions; Italia Fil: Nazzicari, Nelson. Council for Agricultural Research and Economics. Research Centre for Fodder Crops and Dairy Productions; Italia 2018-12-26T17:39:53Z 2018-12-26T17:39:53Z 2018-11-11 info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4152 http://www.worldalfalfacongress.org/resumenes/?lang=en eng info:eu-repograntAgreement/INTA/PNBIO/1131024/AR./Desarrollo de sistemas alternativos de generación y utilización de variabilidad genética y su aplicación al mejoramiento de los cultivos. info:eu-repograntAgreement/INTA/CORDO/1262205/AR./Proyecto regional del territorio agrícola ganadero central de la provincia de Córdoba. info:eu-repograntAgreement/INTA/PNPA/1126072/AR./Desarrollo de cultivares superiores de especies forrajeras para sistemas ganaderos y agricolo-ganaderos de la Argentina. info:eu-repograntAgreement/INTA/CORDO/1262204/AR./Gestión de la innovación en el territorio del arco noroeste de la provincia de Córdoba. info:eu-repograntAgreement/INTA/CORDO/1262206/AR./PReT - Zona III centro Este - Centro Regional Córdoba. 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 2nd. Congress Global Interaction for Alfalfa Innovation. Còrdoba, Argentina, 11-14 noviembre 2018, p. 77-80 |
| spellingShingle | Medicago Sativa Adaptation Drought Tolerance Genomes Phenotypes Adaptación Genomas Fenotipos Annicchiarico, Paolo Nazzicari, Nelson Bouizgaren, Abdelaziz Hayek, Taoufik Laouar, Meriem Cornacchione, Monica Basigalup, Daniel Horacio Brummer, Edward Charles Pecetti, Luciano Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments |
| title | Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments |
| title_full | Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments |
| title_fullStr | Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments |
| title_full_unstemmed | Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments |
| title_short | Genome-enabled and phenotypic selection of alfalfa for widely-diversified cropping environments |
| title_sort | genome enabled and phenotypic selection of alfalfa for widely diversified cropping environments |
| topic | Medicago Sativa Adaptation Drought Tolerance Genomes Phenotypes Adaptación Genomas Fenotipos |
| url | http://hdl.handle.net/20.500.12123/4152 http://www.worldalfalfacongress.org/resumenes/?lang=en |
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