Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship
The prediction of the general combining ability (GCA), from the performance of accessions per se in germplasm collections, and the methodologies of analyses that can improve the efficiency of evaluation, are important points to be investigated in the optimisation of breeding programmes. Aiming to understand these aspects, data from 544 accessions in CEPEC's germplasm collection were analysed and compared with GCA values calculated from eight progeny trials (one diallel and seven NCII designs). The accessions were each represented by one row of 10 trees, except in the case of 21 accessions that were represented by two rows, each of 10 trees. The following variables were observed for mature trees over six years in the collection, and over one to eight years in the hybrid trials: wet bean weight per tree (WBW), number of healthy pods (NHP) and trunk sectional area (TS). Parent-offspring correlations were calculated based on the clonal performance in the collection and the value of the clones as parents (GCA), in several sets of data obtained in the different hybrid trials. The average coefficients of linear correlation between the replicate data, obtained from the accessions that were repeated twice in the collection, were significant for WBW and for NHP, and the correlations were slightly improved when the yield data were corrected using TS as a co-variable or as a block effect, which indicates that the correction reduces the fixed effects of the environment. In general, highly significant parental and interaction effects were observed in the progeny trials. However, parent-offspring correlations were non-significant for WBW and NHP for relatively uniform parental clones (e.g. local Comun clones). However, positive parent-offspring correlations were often observed for genetically variable clones, but only when NHP data from the parental clones were corrected by using TS. The same tendency was observed for WBW, again when corrected using TS, though this was less clear than for NHP. It is concluded that yield data, corrected for vigour, might represent a more stable trait in germplasm collections than yield itself. Furthermore, NHP data of parental clones that are corrected by TS appear to be a more reliable predictor of the number of pods produced by the progenies than uncorrected parental data.
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Subjects: | F30 - Génétique et amélioration des plantes, Theobroma cacao, amélioration des plantes, hybride, clone, aptitude à la combinaison, valeur génétique, intéraction génotype environnement, http://aims.fao.org/aos/agrovoc/c_7713, http://aims.fao.org/aos/agrovoc/c_5956, http://aims.fao.org/aos/agrovoc/c_3707, http://aims.fao.org/aos/agrovoc/c_1678, http://aims.fao.org/aos/agrovoc/c_15954, http://aims.fao.org/aos/agrovoc/c_16117, http://aims.fao.org/aos/agrovoc/c_24577, |
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F30 - Génétique et amélioration des plantes Theobroma cacao amélioration des plantes hybride clone aptitude à la combinaison valeur génétique intéraction génotype environnement http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_5956 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_1678 http://aims.fao.org/aos/agrovoc/c_15954 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_24577 F30 - Génétique et amélioration des plantes Theobroma cacao amélioration des plantes hybride clone aptitude à la combinaison valeur génétique intéraction génotype environnement http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_5956 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_1678 http://aims.fao.org/aos/agrovoc/c_15954 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_24577 |
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F30 - Génétique et amélioration des plantes Theobroma cacao amélioration des plantes hybride clone aptitude à la combinaison valeur génétique intéraction génotype environnement http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_5956 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_1678 http://aims.fao.org/aos/agrovoc/c_15954 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_24577 F30 - Génétique et amélioration des plantes Theobroma cacao amélioration des plantes hybride clone aptitude à la combinaison valeur génétique intéraction génotype environnement http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_5956 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_1678 http://aims.fao.org/aos/agrovoc/c_15954 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_24577 Pires, José Luis Lopes, Uilson Vanderlei Pinto, Luis Roberto M. Monteiro, Wilson Reis Yamada, Milton Macoto Anhert, Dario Eskes, Albertus Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship |
description |
The prediction of the general combining ability (GCA), from the performance of accessions per se in germplasm collections, and the methodologies of analyses that can improve the efficiency of evaluation, are important points to be investigated in the optimisation of breeding programmes. Aiming to understand these aspects, data from 544 accessions in CEPEC's germplasm collection were analysed and compared with GCA values calculated from eight progeny trials (one diallel and seven NCII designs). The accessions were each represented by one row of 10 trees, except in the case of 21 accessions that were represented by two rows, each of 10 trees. The following variables were observed for mature trees over six years in the collection, and over one to eight years in the hybrid trials: wet bean weight per tree (WBW), number of healthy pods (NHP) and trunk sectional area (TS). Parent-offspring correlations were calculated based on the clonal performance in the collection and the value of the clones as parents (GCA), in several sets of data obtained in the different hybrid trials. The average coefficients of linear correlation between the replicate data, obtained from the accessions that were repeated twice in the collection, were significant for WBW and for NHP, and the correlations were slightly improved when the yield data were corrected using TS as a co-variable or as a block effect, which indicates that the correction reduces the fixed effects of the environment. In general, highly significant parental and interaction effects were observed in the progeny trials. However, parent-offspring correlations were non-significant for WBW and NHP for relatively uniform parental clones (e.g. local Comun clones). However, positive parent-offspring correlations were often observed for genetically variable clones, but only when NHP data from the parental clones were corrected by using TS. The same tendency was observed for WBW, again when corrected using TS, though this was less clear than for NHP. It is concluded that yield data, corrected for vigour, might represent a more stable trait in germplasm collections than yield itself. Furthermore, NHP data of parental clones that are corrected by TS appear to be a more reliable predictor of the number of pods produced by the progenies than uncorrected parental data. |
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conference_item |
topic_facet |
F30 - Génétique et amélioration des plantes Theobroma cacao amélioration des plantes hybride clone aptitude à la combinaison valeur génétique intéraction génotype environnement http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_5956 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_1678 http://aims.fao.org/aos/agrovoc/c_15954 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_24577 |
author |
Pires, José Luis Lopes, Uilson Vanderlei Pinto, Luis Roberto M. Monteiro, Wilson Reis Yamada, Milton Macoto Anhert, Dario Eskes, Albertus |
author_facet |
Pires, José Luis Lopes, Uilson Vanderlei Pinto, Luis Roberto M. Monteiro, Wilson Reis Yamada, Milton Macoto Anhert, Dario Eskes, Albertus |
author_sort |
Pires, José Luis |
title |
Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship |
title_short |
Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship |
title_full |
Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship |
title_fullStr |
Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship |
title_full_unstemmed |
Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship |
title_sort |
correlation between clone values in the germplasm collection and hybrids produced by these clones at cepec, with special emphasis on the yield x vigour relationship |
publisher |
INGENIC |
url |
http://agritrop.cirad.fr/527685/ |
work_keys_str_mv |
AT piresjoseluis correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship AT lopesuilsonvanderlei correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship AT pintoluisrobertom correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship AT monteirowilsonreis correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship AT yamadamiltonmacoto correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship AT anhertdario correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship AT eskesalbertus correlationbetweenclonevaluesinthegermplasmcollectionandhybridsproducedbytheseclonesatcepecwithspecialemphasisontheyieldxvigourrelationship |
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1792496247893917696 |
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dig-cirad-fr-5276852024-01-28T13:49:20Z http://agritrop.cirad.fr/527685/ http://agritrop.cirad.fr/527685/ Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship. Pires José Luis, Lopes Uilson Vanderlei, Pinto Luis Roberto M., Monteiro Wilson Reis, Yamada Milton Macoto, Anhert Dario, Eskes Albertus. 2005. In : Proceedings of the International workshop on cocoa breeding for improved production systems, 19th-21th October 2003, Accra, Ghana. Bekele Frances L. (ed.), End Michelle (ed.), Eskes Albertus (ed.). INGENIC, CRIG. Reading : INGENIC, 74-78. ISBN 1-900527-03-0 International Workshop on Cocoa Breeding for Improved Production Systems. 4, Accra, Ghana, 19 Octobre 2003/21 Octobre 2003. Correlation between clone values in the germplasm collection and hybrids produced by these clones at CEPEC, with special emphasis on the yield x vigour relationship Pires, José Luis Lopes, Uilson Vanderlei Pinto, Luis Roberto M. Monteiro, Wilson Reis Yamada, Milton Macoto Anhert, Dario Eskes, Albertus eng 2005 INGENIC Proceedings of the International workshop on cocoa breeding for improved production systems, 19th-21th October 2003, Accra, Ghana F30 - Génétique et amélioration des plantes Theobroma cacao amélioration des plantes hybride clone aptitude à la combinaison valeur génétique intéraction génotype environnement http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_5956 http://aims.fao.org/aos/agrovoc/c_3707 http://aims.fao.org/aos/agrovoc/c_1678 http://aims.fao.org/aos/agrovoc/c_15954 http://aims.fao.org/aos/agrovoc/c_16117 http://aims.fao.org/aos/agrovoc/c_24577 The prediction of the general combining ability (GCA), from the performance of accessions per se in germplasm collections, and the methodologies of analyses that can improve the efficiency of evaluation, are important points to be investigated in the optimisation of breeding programmes. Aiming to understand these aspects, data from 544 accessions in CEPEC's germplasm collection were analysed and compared with GCA values calculated from eight progeny trials (one diallel and seven NCII designs). The accessions were each represented by one row of 10 trees, except in the case of 21 accessions that were represented by two rows, each of 10 trees. The following variables were observed for mature trees over six years in the collection, and over one to eight years in the hybrid trials: wet bean weight per tree (WBW), number of healthy pods (NHP) and trunk sectional area (TS). Parent-offspring correlations were calculated based on the clonal performance in the collection and the value of the clones as parents (GCA), in several sets of data obtained in the different hybrid trials. The average coefficients of linear correlation between the replicate data, obtained from the accessions that were repeated twice in the collection, were significant for WBW and for NHP, and the correlations were slightly improved when the yield data were corrected using TS as a co-variable or as a block effect, which indicates that the correction reduces the fixed effects of the environment. In general, highly significant parental and interaction effects were observed in the progeny trials. However, parent-offspring correlations were non-significant for WBW and NHP for relatively uniform parental clones (e.g. local Comun clones). However, positive parent-offspring correlations were often observed for genetically variable clones, but only when NHP data from the parental clones were corrected by using TS. The same tendency was observed for WBW, again when corrected using TS, though this was less clear than for NHP. It is concluded that yield data, corrected for vigour, might represent a more stable trait in germplasm collections than yield itself. Furthermore, NHP data of parental clones that are corrected by TS appear to be a more reliable predictor of the number of pods produced by the progenies than uncorrected parental data. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/closedAccess http://agritrop.cirad.fr/527673/ |