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Genetic Dissection and Identification of Candidate Genes for Salinity Tolerance Using Axiom®CicerSNP Array in Chickpea

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Relation http://oar.icrisat.org/11590/
https://doi.org/10.3390/ijms21145058
doi:10.3390/ijms21145058
 
Title Genetic Dissection and Identification of Candidate Genes for Salinity Tolerance Using Axiom®CicerSNP Array in Chickpea
 
Creator Soren, K R
Madugula, P
Kumar, N
Barmukh, R
Sengar, M S
Bharadwaj, C
Sharma, P C
Singh, S
Bhandari, A
Singh, J
Sanwal, S K
Pal, M
Sneha Priya, P R
Mann, A
Sagurthi, S R
Shanmugavadivel, P S
Siddique, K H M
Singh, N P
Roorkiwal, M
Varshney, R K
 
Subject Chickpea
Genetics and Genomics
 
Description Globally, chickpea production is severely affected by salinity stress. Understanding the
genetic basis for salinity tolerance is important to develop salinity tolerant chickpeas. A recombinant
inbred line (RIL) population developed using parental lines ICCV 10 (salt-tolerant) and DCP
92-3 (salt-sensitive) was screened under field conditions to collect information on agronomy,
yield components, and stress tolerance indices. Genotyping data generated using Axiom®CicerSNP
array was used to construct a linkage map comprising 1856 SNP markers spanning a distance of
1106.3 cM across eight chickpea chromosomes. Extensive analysis of the phenotyping and genotyping
data identified 28 quantitative trait loci (QTLs) explaining up to 28.40% of the phenotypic variance in
the population. We identified QTL clusters on CaLG03 and CaLG06, each harboring major QTLs
for yield and yield component traits under salinity stress. The main-effect QTLs identified in these
two clusters were associated with key genes such as calcium-dependent protein kinases, histidine
kinases, cation proton antiporter, and WRKY and MYB transcription factors, which are known to
impart salinity stress tolerance in crop plants. Molecular markers/genes associated with these major
QTLs, after validation, will be useful to undertake marker-assisted breeding for developing better
varieties with salinity tolerance.
 
Publisher MDPI
 
Date 2020-07
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11590/1/ijms-21-05058-v3.pdf
Soren, K R and Madugula, P and Kumar, N and Barmukh, R and Sengar, M S and Bharadwaj, C and Sharma, P C and Singh, S and Bhandari, A and Singh, J and Sanwal, S K and Pal, M and Sneha Priya, P R and Mann, A and Sagurthi, S R and Shanmugavadivel, P S and Siddique, K H M and Singh, N P and Roorkiwal, M and Varshney, R K (2020) Genetic Dissection and Identification of Candidate Genes for Salinity Tolerance Using Axiom®CicerSNP Array in Chickpea. International Journal of Molecular Sciences (TSI), 21 (14). pp. 1-17. ISSN 1422-0067