Wankhade, A P and Chimote, V P and Viswanatha, K P and Yadaru, S and Deshmukh, D B and Gattu, S and Sudini, H K and Deshmukh, M D and Shinde, V S and Vemula, A K and Pasupuleti, J (2023) Genome-wide association mapping for LLS resistance in a MAGIC population of groundnut (Arachis hypogaea L.). Theoretical and Applied Genetics, 136. ISSN 1432-2242
Full text not available from this repository. (Request a copy)Abstract
A genome-wide association study (GWAS) on component traits of LLS resistance in an eight-way multiparent advance generation intercross (MAGIC) population of groundnut in the field and in a light chamber (controlled conditions) was performed via an Affymetrix 48 K single-nucleotide polymorphism (SNP) ‘Axiom Arachis’ array. Multiparental populations with high-density genotyping enable the detection of novel alleles. In total, five quantitative trait loci (QTLs) with marker − log10(p value) scores ranging from 4.25 to 13.77 for the incubation period (IP) and six QTLs with marker − log10(p value) scores ranging from 4.33 to 10.79 for the latent period (LP) were identified across the A- and B-subgenomes. A total of 62 markers‒trait associations (MTAs) were identified across the A- and B-subgenomes. Markers for LLS scores and the area under the disease progression curve (AUDPC) recorded for plants in the light chamber and under field conditions presented − log10 (p value) scores ranging from 4.22 to 27.30. The highest number of MTAs (six) was identified on chromosomes A05, B07 and B09. Out of a total of 73 MTAs, 37 and 36 MTAs were detected in subgenomes A and B, respectively. Taken together, these results suggest that both subgenomes have equal potential genomic regions contributing to LLS resistance. A total of 30 functional nucleotide polymorphisms or genic SNP markers were detected, among which eight genes were found to encode leucine-rich repeat (LRR) receptor-like protein kinases and putative disease resistance proteins. These important SNPs can be used in breeding programmes for the development of cultivars with improved disease resistance.
| Item Type: | Article |
|---|---|
| Divisions: | Global Research Program - Accelerated Crop Improvement Research Program : Asia Statistics, Bio-Informatics & Data Management |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | groundnut, LLS resistance, Genome-wide association mapping |
| Subjects: | Others > Plant Breeding Mandate crops > Groundnut |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 20 Oct 2023 05:49 |
| Last Modified: | 20 Oct 2023 05:49 |
| URI: | http://oar.icrisat.org/id/eprint/12228 |
| Official URL: | https://link.springer.com/article/10.1007/s00122-0... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | UNSPECIFIED |
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