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Identification of quantitative trait loci associated with iron deficiency chlorosis resistance in groundnut ( Arachis hypogaea )

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Relation http://oar.icrisat.org/11595/
https://doi.org/10.1111/pbr.12815
doi:10.1111/pbr.12815
 
Title Identification of quantitative trait loci associated with iron deficiency chlorosis resistance in groundnut ( Arachis hypogaea )
 
Creator Pattanashetti, S K
Pandey, M K
Naidu, G K
Vishwakarma, M K
Singh, O K
Shasidhar, Y
Boodi, I H
Biradar, B D
Das, R R
Rathore, A
Varshney, R K
Morris, B
 
Subject Abiotic Stress
Groundnut
Genetics and Genomics
 
Description Iron deficiency chlorosis is an important abiotic stress affecting groundnut production
worldwide in calcareous and alkaline soils with a pH of 7.5–8.5. To identify genomic
regions controlling iron deficiency chlorosis resistance in groundnut, the recombinant
inbred line population from the cross TAG 24 × ICGV 86031 was evaluated for associated
traits like visual chlorosis rating and SPAD chlorophyll meter reading across
three crop growth stages for two consecutive years. Thirty-two QTLs were identified
for visual chlorosis rating (3.9%–31.8% phenotypic variance explained [PVE]) and
SPAD chlorophyll meter reading [3.8%–11% PVE] across three stages over 2 years.
This is the first report of identification of QTLs for iron deficiency chlorosis resistance-
associated traits in groundnut. Three major QTLs (>10% PVE) were identified at
severe stage, while majority of other QTLs were having small effects. Interestingly,
two major QTLs for visual chlorosis rating at 60 days (2013) and 90 days (2014) were
located at same position on LG AhXIII. The identified QTLs/markers after validation
across diverse genetic material could be used in genomics-assisted breeding.
 
Publisher Wiley
 
Date 2020-02
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11595/1/pbr.12815.pdf
Pattanashetti, S K and Pandey, M K and Naidu, G K and Vishwakarma, M K and Singh, O K and Shasidhar, Y and Boodi, I H and Biradar, B D and Das, R R and Rathore, A and Varshney, R K and Morris, B (2020) Identification of quantitative trait loci associated with iron deficiency chlorosis resistance in groundnut ( Arachis hypogaea ). Plant Breeding (TSI), 139 (4). pp. 790-803. ISSN 0179-9541