Molecular mapping of dry root rot resistance genes in chickpea (Cicer arietinum L.)
| Autor: | B. P. Mallikarjuna, Sobhan B. Sajja, Kannalli P. Viswanatha, Mamta Sharma, Pooran M. Gaur, Mahendar Thudi, Rajeev K. Varshney, Srinivasan Samineni, Ashwini Karadi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Candidate gene Plant Science Horticulture Plant disease resistance Biology Quantitative trait locus 01 natural sciences Plant disease SNP genotyping 03 medical and health sciences 030104 developmental biology Inbred strain Genetic linkage Genetics Root rot Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Euphytica. 217 |
| ISSN: | 1573-5060 0014-2336 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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