Quantitative trait loci for partial resistance to Aphanomyces root rot in pea

Publication Overview
TitleQuantitative trait loci for partial resistance to Aphanomyces root rot in pea
AuthorsPilet-Nayel L, Muehlbauer FJ, McGee RJ, Kraft JM, Baranger A, Coyne CJ
TypeJournal Article
Journal NameTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Volume106
Issue1
Year2002
Page(s)28-39
CitationPilet-Nayel L, Muehlbauer FJ, McGee RJ, Kraft JM, Baranger A, Coyne CJ. Quantitative trait loci for partial resistance to Aphanomyces root rot in pea. TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik. 2002 Dec; 106(1):28-39.

Abstract

Aphanomyces root rot, caused by Aphanomyces euteiches Drechs, is the most-important disease of pea ( Pisum sativum L.) worldwide. No efficient chemicals are available to control the pathogen. To facilitate breeding for Aphanomyces root rot resistance and to better understand the inheritance of partial resistance, our goal was to identify QTLs associated with field partial resistance. A population of 127 RILs from the cross Puget (susceptible) x 90-2079 (partially resistant) was used. The lines were assessed for resistance to A. euteiches under field conditions at two locations in the United States (Pullman, Wash. and LeSueur, Minn.) in 1996 and 1998 for three criteria based on symptom intensity and disease effects on the whole plant. The RILs were genotyped using automated AFLPs, RAPDs, SSRs, ISSRs, STSs, isozymes and morphological markers. The resulting genetic map consisted of 324 linked markers distributed over 13 linkage groups covering 1,094 cM (Kosambi). Twenty seven markers were anchored to other published pea genetic maps. A total of seven genomic regions were associated with Aphanomyces root rot resistance. The first one, located on LG IVb and named Aph1, was considered as "major" since it was highly consistent over the years, locations and resistance criteria studied, and it explained up to 47% of the variation in the 1998 Minnesota trial. Two other year-specific QTLs, namely Aph2 and Aph3, were revealed from different scoring criteria on LG V and Ia, respectively. Aph2 and Aph3 mapped near the r (wrinkled/round seeds) and af (normal/afila leaves) genes, and accounted for up to 32% and 11% of the variation, respectively. Four other "minor" QTLs, identified on LG Ib, VII and B, were specific to one environment and one resistance criterion. The resistance alleles of Aph3 and the two "minor" QTLs on LG Ib were derived from the susceptible parent. Flanking markers for the major Aphanomyces resistance QTL, Aph1, have been identified for use in marker-assisted selection to improve breeding efficiency.

Features
This publication contains information about 13 features:
Feature NameUniquenameType
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIb.Aph4.AGIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIVb.Aph1.AGIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGV.Aph2.AGIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIb.Aph5.RRIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGV.Aph2.RRIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIVb.Aph1.AGI.2QTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGVII.Aph6.AGIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGB.Aph7.AGIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIVb.Aph1.AGI.3QTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIa.Aph3.RRIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIVb.Aph1.RRIQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIa.Aph3.DWLQTL
Aphanomyces root rot resistanceqARR.Pugetx90-2079.LGIVb.Aph1.DWLQTL
Projects
This publication contains information about 1 projects:
Project NameDescription
Pea-Aphanomyces_euteiches_partial_resistance-Pilet-Nayel-2002
Properties
Additional details for this publication include:
Property NameValue
Language Abbreng
Publication TypeJournal Article
LanguageEnglish
Journal CountryGermany
Publication ModelPrint-Electronic
ISSN0040-5752
pISSN0040-5752
Publication Date2002 Dec
Journal AbbreviationTheor. Appl. Genet.
Publication TypeResearch Support, Non-U.S. Gov't
Publication TypeResearch Support, U.S. Gov't, Non-P.H.S.