Genomic regions associated with chocolate spot (Botrytis fabae Sard.) resistance in faba bean (Vicia faba L.)

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Gela , T S , Bruce , M , Chang , W , Stoddard , F L , Schulman , A H , Vandenberg , A & Khazaei , H 2022 , ' Genomic regions associated with chocolate spot (Botrytis fabae Sard.) resistance in faba bean (Vicia faba L.) ' , Molecular Breeding , vol. 42 , 35 . https://doi.org/10.1007/s11032-022-01307-7

Title: Genomic regions associated with chocolate spot (Botrytis fabae Sard.) resistance in faba bean (Vicia faba L.)
Author: Gela, Tadesse S.; Bruce, Margaret; Chang, Wei; Stoddard, Frederick L.; Schulman, Alan H.; Vandenberg, Albert; Khazaei, Hamid
Contributor organization: University of Helsinki
Institute of Biotechnology
Department of Agricultural Sciences
Helsinki Institute of Sustainability Science (HELSUS)
Viikki Plant Science Centre (ViPS)
Crop Science Research Group
Legume science
Plant Production Sciences
Biosciences
Faculty of Agriculture and Forestry
Date: 2022-06
Language: eng
Number of pages: 10
Belongs to series: Molecular Breeding
ISSN: 1380-3743
DOI: https://doi.org/10.1007/s11032-022-01307-7
URI: http://hdl.handle.net/10138/346282
Abstract: Chocolate spot (CS), caused by Botrytis fabae Sard., is an important threat to global faba bean production. Growing resistant faba bean cultivars is, therefore, paramount to preventing yield loss. To date, there have been no reported quantitative trait loci (QTL) associated with CS resistance in faba bean. The objective of this study was to identify genomic regions associated with CS resistance using a recombinant inbred line (RIL) population derived from resistant accession ILB 938. A total of 165 RILs from the cross Melodie/2 x ILB 938/2 were genotyped and evaluated for CS reactions under replicated controlled climate conditions. The RIL population showed significant variation in response to CS resistance. QTL analysis identified five loci contributing to CS resistance on faba bean chromosomes 1 and 6, accounting for 28.4% and 12.5%, respectively, of the total phenotypic variance. The results of this study not only provide insight into disease-resistance QTL, but also can be used as potential targets for marker-assisted breeding in faba bean genetic improvement for CS resistance.
Subject: Botrytis fabae
Chocolate spot
Faba bean
Disease resistance
QTL mapping
SNP markers
QUANTITATIVE TRAIT LOCI
ASCOCHYTA BLIGHT
QTL
IDENTIFICATION
YIELD
STABILITY
CROSSES
MODEL
4111 Agronomy
11831 Plant biology
Peer reviewed: Yes
Rights: other
Usage restriction: openAccess
Self-archived version: publishedVersion


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