The effectiveness of association mapping (AM) based on linkage disequilibrium (LD) is currently being tested in a number of crops. An important prerequisite for the application of AM is the avail- ability of collections of accessions with a suitable level of genetic variation for target traits and with limited spurious LD due to the presence of population structure. Herein, the results of a genome- wide molecular characterization of a collection of elite durum wheat accessions well-adapted to Mediterranean environments are presented. Ninety-seven highly polymorphic simple sequence repeats and 166 amplified fragment length polymorphism markers were used to characterize 189 durum accessions, mainly cultivars and advanced breeding lines. Genome-wide significant and sizeable LD indices at a centimorgan scale were observed, while LD mainly decayed within 10 cM. On the other hand, effects due to spurious LD were notably lower than those previously observed in a durum wheat collection sampling durum gene pools of more diverse origin. These results, coupled with the high level of genetic variability detected for a number of important morpho-physiological traits and their high heritability, indicate the suitability of this collection for AM studies targeting agronomically important traits.

A panel of elite accessions of durum wheat (Triticum durum Desf.) suitable for association mapping studies / MACCAFERRI M.; SANGUINETI M.C.; NATOLI V.; ARAUS ORTEGA J.L.; BEN SALEM M.; BORT J.; CHENENAOUI C.; DE AMBROGIO E.; GARCIA DEL MORAL L.F.; DE MONTIS A.; EL-AHMED A.; MAALOUF F.; MACHLAB H.; MORAGUES M.; MOTAWAJ J.; NACHIT M.M.; NSERALLAH N.; OUABBOU H.; ROYO C.; TUBEROSA R.. - In: PLANT GENETIC RESOURCES. - ISSN 1479-2621. - STAMPA. - 4:(2006), pp. 79-85. [10.1079/PGR2006117]

A panel of elite accessions of durum wheat (Triticum durum Desf.) suitable for association mapping studies

MACCAFERRI, MARCO;SANGUINETI, MARIA CORINNA;TUBEROSA, ROBERTO
2006

Abstract

The effectiveness of association mapping (AM) based on linkage disequilibrium (LD) is currently being tested in a number of crops. An important prerequisite for the application of AM is the avail- ability of collections of accessions with a suitable level of genetic variation for target traits and with limited spurious LD due to the presence of population structure. Herein, the results of a genome- wide molecular characterization of a collection of elite durum wheat accessions well-adapted to Mediterranean environments are presented. Ninety-seven highly polymorphic simple sequence repeats and 166 amplified fragment length polymorphism markers were used to characterize 189 durum accessions, mainly cultivars and advanced breeding lines. Genome-wide significant and sizeable LD indices at a centimorgan scale were observed, while LD mainly decayed within 10 cM. On the other hand, effects due to spurious LD were notably lower than those previously observed in a durum wheat collection sampling durum gene pools of more diverse origin. These results, coupled with the high level of genetic variability detected for a number of important morpho-physiological traits and their high heritability, indicate the suitability of this collection for AM studies targeting agronomically important traits.
2006
A panel of elite accessions of durum wheat (Triticum durum Desf.) suitable for association mapping studies / MACCAFERRI M.; SANGUINETI M.C.; NATOLI V.; ARAUS ORTEGA J.L.; BEN SALEM M.; BORT J.; CHENENAOUI C.; DE AMBROGIO E.; GARCIA DEL MORAL L.F.; DE MONTIS A.; EL-AHMED A.; MAALOUF F.; MACHLAB H.; MORAGUES M.; MOTAWAJ J.; NACHIT M.M.; NSERALLAH N.; OUABBOU H.; ROYO C.; TUBEROSA R.. - In: PLANT GENETIC RESOURCES. - ISSN 1479-2621. - STAMPA. - 4:(2006), pp. 79-85. [10.1079/PGR2006117]
MACCAFERRI M.; SANGUINETI M.C.; NATOLI V.; ARAUS ORTEGA J.L.; BEN SALEM M.; BORT J.; CHENENAOUI C.; DE AMBROGIO E.; GARCIA DEL MORAL L.F.; DE MONTIS A.; EL-AHMED A.; MAALOUF F.; MACHLAB H.; MORAGUES M.; MOTAWAJ J.; NACHIT M.M.; NSERALLAH N.; OUABBOU H.; ROYO C.; TUBEROSA R.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/38981
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