Journal article
New consistent QTL in pea associated with partial resistance to Aphanomyces euteiches in multiple French and American environments
Theoretical and applied genetics, Vol.123(2), pp.261-281
2011
Handle:
https://hdl.handle.net/2376/106891
PMID: 21479935
Abstract
Partial resistances, often controlled by quantitative trait loci (QTL), are considered to be more durable than monogenic resistances. Therefore, a precursor to developing efficient breeding programs for polygenic resistance to pathogens should be a greater understanding of genetic diversity and stability of resistance QTL in plants. In this study, we deciphered the diversity and stability of resistance QTL to Aphanomyces euteiches in pea towards pathogen variability, environments and scoring criteria, from two new sources of partial resistance (PI 180693 and 552), effective in French and USA infested fields. Two mapping populations of 178 recombinant inbred lines each, derived from crosses between 552 or PI 180693 (partially resistant) and Baccara (susceptible), were used to identify QTL for Aphanomyces root rot resistance in controlled and in multiple French and USA field conditions using several resistance criteria. We identified a total of 135 additive-effect QTL corresponding to 23 genomic regions and 13 significant epistatic interactions associated with partial resistance to A. euteiches in pea. Among the 23 additive-effect genomic regions identified, five were consistently detected, and showed highly stable effects towards A. euteiches strains, environments, resistance criteria, condition tests and RIL populations studied. These results confirm the complexity of inheritance of partial resistance to A. euteiches in pea and provide good bases for the choice of consistent QTL to use in marker-assisted selection schemes to increase current levels of resistance to A. euteiches in pea breeding programs
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Details
- Title
- New consistent QTL in pea associated with partial resistance to Aphanomyces euteiches in multiple French and American environments
- Creators
- Céline Hamon - Amélioration des Plantes et Biotechnologies VégétalesAlain Baranger - Amélioration des Plantes et Biotechnologies VégétalesC.J Coyne - United States Department of AgricultureR.J McGee - United States Department of AgricultureIsabelle Le Goff - Amélioration des Plantes et Biotechnologies VégétalesVirginie L'anthoëne - Amélioration des Plantes et Biotechnologies VégétalesRobert Esnault - Amélioration des Plantes et Biotechnologies VégétalesJean-Philippe Riviere - Amélioration des Plantes et Biotechnologies VégétalesAnthony Klein - UMR 0102 - Unité de Recherche Génétique et Ecophysiologie des LégumineusesPierre Mangin - Domaine expérimental d'ÉpoissesK.E McPhee - North Dakota State UniversityM Roux-Duparque - GSPL Porter - United States Department of AgricultureHenri Miteul - Amélioration des Plantes et Biotechnologies VégétalesAngélique Lesne - Amélioration des Plantes et Biotechnologies VégétalesGerard Morin - Amélioration des Plantes et Biotechnologies VégétalesCaroline Onfroy - Biologie des organismes et des populations appliquées à la protection des plantesAnne Moussart - Biologie des organismes et des populations appliquées à la protection des plantesBernard Tivoli - Biologie des organismes et des populations appliquées à la protection des plantesRegine Delourme - Amélioration des Plantes et Biotechnologies VégétalesMarie-Laure Nayel - Amélioration des Plantes et Biotechnologies Végétales
- Publication Details
- Theoretical and applied genetics, Vol.123(2), pp.261-281
- Academic Unit
- Crop and Soil Sciences, Department of
- Publisher
- Springer Verlag
- Identifiers
- 99900547098601842
- Language
- English
- Resource Type
- Journal article