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Genetic mapping of QTLs for drought tolerance in chickpea (Cicer arietinum L.)

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Relation http://oar.icrisat.org/12322/
https://www.frontiersin.org/articles/10.3389/fgene.2022.953898/full
https://doi.org/10.3389/fgene.2022.953898
 
Title Genetic mapping of QTLs for drought tolerance in chickpea (Cicer arietinum L.)
 
Creator Kushwah, A
Bhatia, D
Barmukh, R
Singh, I
Singh, G
Bindra, S
Vij, S
Chellapilla, B
Pratap, A
Roorkiwal, M
Kumar, S
Varshney, R K
Singh, S
 
Subject Chickpea
Genetics and Genomics
 
Description Chickpea yield is severely affected by drought stress, which is a complex quantitative trait regulated by multiple small-effect genes. Identifying genomic regions associated with drought tolerance component traits may increase our understanding of drought tolerance mechanisms and assist in
the development of drought-tolerant varieties. Here, a total of 187 F8 recombinant inbred lines (RILs) developed from an interspecific cross between drought-tolerant genotype GPF 2 (Cicer arietinum) and droughtsensitive accession ILWC 292 (C. reticulatum) were evaluated to identify quantitative trait loci (QTLs) associated with drought tolerance component traits. A total of 21 traits, including 12 morpho-physiological traits and nine rootrelated traits, were studied under rainfed and irrigated conditions. Composite
interval mapping identified 31 QTLs at Ludhiana and 23 QTLs at Faridkot locations for morphological and physiological traits, and seven QTLs were identified for root-related traits. QTL analysis identified eight consensus QTLs for six traits and five QTL clusters containing QTLs for multiple traits on linkage groups CaLG04 and CaLG06. The identified major QTLs and genomic regions associated with drought tolerance component traits can be introgressed into elite cultivars using genomics-assisted breeding to enhance
drought tolerance in chickpea.
 
Publisher Frontiers Media
 
Date 2022-08-19
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12322/1/Frontiers%20in%20Genetics_13_01-15_2022.pdf
Kushwah, A and Bhatia, D and Barmukh, R and Singh, I and Singh, G and Bindra, S and Vij, S and Chellapilla, B and Pratap, A and Roorkiwal, M and Kumar, S and Varshney, R K and Singh, S (2022) Genetic mapping of QTLs for drought tolerance in chickpea (Cicer arietinum L.). Frontiers in Genetics (TSI), 13. 01-15. ISSN 1664-8021