Extensive citrus triploid breeding program by 2xx4x sexual hybridizations
Production of seedless citrus fruits is required for the fresh market because consumers do not accept seedy fruits. Development of new seedless mandarin cultivars has a high priority for many citrus industries worldwide. The recovery of triploid hybrids is the most promising approach to achieve this goal, since triploids have a very low pollen and ovule fertility and usually are seedless or produce very low numbers of seeds, and do not induce the formation of seeds in other cultivars by cross pollination. The objective of our breeding program is to produce new high quality easy peeling and seedless mandarin cultivars. Citrus triploid plants can be recovered by 2jcx4y sexual hybridizations. Triploid embryos are found in normal and undeveloped seeds that do not germinate under greenhouse conditions. Extensive breeding programs based on this type of hybridization require very effective methodologies for recovery of new tetraploid parents, embryo rescue and ploidy evaluation. Different approaches have been implemented to obtain new tetraploid parents. Spontaneous autotetraploid plants of apomictic genotypes have been selected from seedbeds by flow cytometry and autotetraploid plants of non apomictic genotypes have been obtained by chromosome duplication with treatments of micrografted shoot tips with colchicine or oryzalin. Symmetric protoplast fusion is also used to produce tetraploid genotypes. So far, we have obtained more than 4,400 triploid hybrids from 77 parental combinations. Protection of Plant Breeder's Rights of a triploid hybrid named IVIA-600 obtained in a hybridization between 'Hernandina' clementine and tetraploid 'Orlando' tangelo has been requested.
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dig-cirad-fr-5688702022-03-30T14:52:41Z http://agritrop.cirad.fr/568870/ http://agritrop.cirad.fr/568870/ Extensive citrus triploid breeding program by 2xx4x sexual hybridizations. Aleza Pablo, Juarez José, Cuenca José, Hernandez Maria, Ollitrault Patrick, Navarro Luis. 2012. In : Proceedings of the Seventh International Symposium on in vitro culture and horticultural breeding, Ghent, Belgium, September 18-22, 2011. Geelen Danny (ed.). ISHS. Louvain : ISHS [Belgique], 67-72. (Acta Horticulturae, 961) ISBN 978-90-6605-595-7 International Symposium on In Vitro Culture and Horticultural Breeding. 7, Gand, Belgique, 18 Septembre 2011/22 Septembre 2011. Researchers Extensive citrus triploid breeding program by 2xx4x sexual hybridizations Aleza, Pablo Juarez, José Cuenca, José Hernandez, Maria Ollitrault, Patrick Navarro, Luis eng 2012 ISHS [Belgique] Proceedings of the Seventh International Symposium on in vitro culture and horticultural breeding, Ghent, Belgium, September 18-22, 2011 F30 - Génétique et amélioration des plantes Production of seedless citrus fruits is required for the fresh market because consumers do not accept seedy fruits. Development of new seedless mandarin cultivars has a high priority for many citrus industries worldwide. The recovery of triploid hybrids is the most promising approach to achieve this goal, since triploids have a very low pollen and ovule fertility and usually are seedless or produce very low numbers of seeds, and do not induce the formation of seeds in other cultivars by cross pollination. The objective of our breeding program is to produce new high quality easy peeling and seedless mandarin cultivars. Citrus triploid plants can be recovered by 2jcx4y sexual hybridizations. Triploid embryos are found in normal and undeveloped seeds that do not germinate under greenhouse conditions. Extensive breeding programs based on this type of hybridization require very effective methodologies for recovery of new tetraploid parents, embryo rescue and ploidy evaluation. Different approaches have been implemented to obtain new tetraploid parents. Spontaneous autotetraploid plants of apomictic genotypes have been selected from seedbeds by flow cytometry and autotetraploid plants of non apomictic genotypes have been obtained by chromosome duplication with treatments of micrografted shoot tips with colchicine or oryzalin. Symmetric protoplast fusion is also used to produce tetraploid genotypes. So far, we have obtained more than 4,400 triploid hybrids from 77 parental combinations. Protection of Plant Breeder's Rights of a triploid hybrid named IVIA-600 obtained in a hybridization between 'Hernandina' clementine and tetraploid 'Orlando' tangelo has been requested. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/568870/1/document_568870.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=216152 |
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F30 - Génétique et amélioration des plantes F30 - Génétique et amélioration des plantes Aleza, Pablo Juarez, José Cuenca, José Hernandez, Maria Ollitrault, Patrick Navarro, Luis Extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
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Production of seedless citrus fruits is required for the fresh market because consumers do not accept seedy fruits. Development of new seedless mandarin cultivars has a high priority for many citrus industries worldwide. The recovery of triploid hybrids is the most promising approach to achieve this goal, since triploids have a very low pollen and ovule fertility and usually are seedless or produce very low numbers of seeds, and do not induce the formation of seeds in other cultivars by cross pollination. The objective of our breeding program is to produce new high quality easy peeling and seedless mandarin cultivars. Citrus triploid plants can be recovered by 2jcx4y sexual hybridizations. Triploid embryos are found in normal and undeveloped seeds that do not germinate under greenhouse conditions. Extensive breeding programs based on this type of hybridization require very effective methodologies for recovery of new tetraploid parents, embryo rescue and ploidy evaluation. Different approaches have been implemented to obtain new tetraploid parents. Spontaneous autotetraploid plants of apomictic genotypes have been selected from seedbeds by flow cytometry and autotetraploid plants of non apomictic genotypes have been obtained by chromosome duplication with treatments of micrografted shoot tips with colchicine or oryzalin. Symmetric protoplast fusion is also used to produce tetraploid genotypes. So far, we have obtained more than 4,400 triploid hybrids from 77 parental combinations. Protection of Plant Breeder's Rights of a triploid hybrid named IVIA-600 obtained in a hybridization between 'Hernandina' clementine and tetraploid 'Orlando' tangelo has been requested. |
format |
conference_item |
topic_facet |
F30 - Génétique et amélioration des plantes |
author |
Aleza, Pablo Juarez, José Cuenca, José Hernandez, Maria Ollitrault, Patrick Navarro, Luis |
author_facet |
Aleza, Pablo Juarez, José Cuenca, José Hernandez, Maria Ollitrault, Patrick Navarro, Luis |
author_sort |
Aleza, Pablo |
title |
Extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
title_short |
Extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
title_full |
Extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
title_fullStr |
Extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
title_full_unstemmed |
Extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
title_sort |
extensive citrus triploid breeding program by 2xx4x sexual hybridizations |
publisher |
ISHS [Belgique] |
url |
http://agritrop.cirad.fr/568870/ http://agritrop.cirad.fr/568870/1/document_568870.pdf |
work_keys_str_mv |
AT alezapablo extensivecitrustriploidbreedingprogramby2xx4xsexualhybridizations AT juarezjose extensivecitrustriploidbreedingprogramby2xx4xsexualhybridizations AT cuencajose extensivecitrustriploidbreedingprogramby2xx4xsexualhybridizations AT hernandezmaria extensivecitrustriploidbreedingprogramby2xx4xsexualhybridizations AT ollitraultpatrick extensivecitrustriploidbreedingprogramby2xx4xsexualhybridizations AT navarroluis extensivecitrustriploidbreedingprogramby2xx4xsexualhybridizations |
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1758023733768880128 |