Molecular mapping of dry root rot resistance genes in chickpea (Cicer arietinum L.)

Karadi, A and Samineni, S and Sajja, S and Sharma, M and Thudi, M and Mallikarjuna, B P and Viswanatha, K P and Varshney, R K and Gaur, P M (2021) Molecular mapping of dry root rot resistance genes in chickpea (Cicer arietinum L.). Euphytica (TSI), 217 (6). pp. 1-13. ISSN 0014-2336

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Dry root rot (DRR) caused by Rhizoctonia bataticola [(Taub.) Butler] is an emerging disease of chickpea (Cicer arietinum L.) and a serious constraint to chickpea production in warm and arid regions. To identify the genomic regions conferring resistance to DRR, a total of 182 F9 derived Recombinant Inbred Lines (RILs) were developed from the cross between a susceptible line BG 212 and moderately resistant breeding line ICCV 08305. The parental lines and RILs were screened against Rb 6 isolate of R. bataticola using paper towel method under controlled environment at ICRISAT during 2016 and 2017. The RILs were genotyped with cost-effective SNP genotyping platform, Affymetrix Axiom CicerSNP array. As a result, a high-density genetic map with 13,110 SNP markers spanning 1224.11 cM with an average inter marker distance of 0.09 cM was developed. A single minor QTL (‘qDRR-8’) explaining 6.70% PVE with LOD scores 3.34 was identified on CaLG08 for DRR resistance which could be further explored for mining candidate genes and the linked SNP markers could be further validated for application in marker-assisted selection of DRR resistance in chickpea breeding programs.

Item Type: Article
Divisions: Research Program : Genetic Gains
CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords: Cicer, Chickpea, Disease resistance, Dry root rot, Linkage map, QTL mapping
Subjects: Mandate crops > Chickpea
Others > Genetics and Genomics
Others > Plant Disease
Depositing User: Mr Arun S
Date Deposited: 09 Jun 2021 16:20
Last Modified: 09 Jun 2021 16:21
Official URL:
Acknowledgement: This work was undertaken as part of the CGIAR Research Program on Grain Legumes and KWDP-II (Sujala-III) project funded by the Government of Karnataka state of India.
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