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Identification of genomic regions linked to blast (Pyricularia grisea) resistance in pearl millet

OAR@ICRISAT

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Relation http://oar.icrisat.org/12103/
https://onlinelibrary.wiley.com/doi/full/10.1111/pbr.13111
https://doi.org/10.1111/pbr.13111
 
Title Identification of genomic regions linked to blast (Pyricularia grisea) resistance in pearl millet
 
Creator Pujar, M
Kumar, S
Sharma, R
Ramu, P
Babu, R
Gupta, S K
 
Subject Pearl Millet
 
Description Blast disease causes serious economic yield losses in pearl millet. Identification and introgression of genomic regions associated with blast resistance can help to develop resistant cultivars to minimize yield losses incurred from blast outbreaks. In this study, 384 advanced pearl millet genotypes were screened against six blast pathotype-isolates (major pearl millet growing agro-ecologies of India), namely, Pg 45, Pg 118, Pg 138, Pg 186, Pg 204 and Pg 232. Analysis of variance showed significant (P < .001) variation among genotypes for blast reaction (susceptible to resistance). ICMR 08111 and ICMR 10888 genotypes showed resistance to all six blast pathotypes. A genome-wide association study performed with 264,241 single nucleotide polymorphic markers could successfully identify 15 SNPs (P = 1.26 x 10-7 to 9.22 x 10-12) underlying the genomic regions governing blast-resistance across five different chromosomes. The SNPs reported had a significant association in at least two of the three models tested (GLM, MLM and Farm CPU). These SNPs can be used in pearl millet-resistant breeding programmes after their function has been validated across different genetic backgrounds.
 
Publisher John Wiley & Sons Ltd
 
Date 2023-05-19
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12103/1/Plant%20Breeding_1-12_2023.pdf
Pujar, M and Kumar, S and Sharma, R and Ramu, P and Babu, R and Gupta, S K (2023) Identification of genomic regions linked to blast (Pyricularia grisea) resistance in pearl millet. Plant Breeding, 142 (4). pp. 506-517. ISSN 1439-0523