1. Association mapping of genomic loci linked with Fusarium wilt resistance (Foc2) in chickpea
- Author
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L. Manjunatha, Rintu Jha, Narendra Singh, P. R. Saabale, Virevol Thakro, Uday Chand Jha, Abhishek Bohra, Swarup K. Parida, and Sushil K. Chaturvedi
- Subjects
0106 biological sciences ,0301 basic medicine ,Genetic diversity ,Veterinary medicine ,Structure analysis ,Resistance (ecology) ,Plant Science ,Biology ,01 natural sciences ,Fusarium wilt ,03 medical and health sciences ,030104 developmental biology ,Genotype ,Genetics ,Microsatellite ,Allele ,Association mapping ,Agronomy and Crop Science ,010606 plant biology & botany - Abstract
Improving plant resistance against Fusarium wilt (FW) is key to sustaining chickpea production worldwide. Given this, the current study tested a set of 75 FW-responsive chickpea breeding lines including checks in a wilt-sick plot for two consecutive years (2016 and 2017). Genetic diversity analysis using 75 simple sequence repeats (SSRs) revealed a total of 267 alleles with an average of 3.56 alleles per marker. The entire set was divided into two major classes based on clustering method and factorial analysis. Similarly, STRUCTURE analysis placed the 75 genotypes into three distinct sub-groups (K = 3). Marker-trait association (MTA) analysis using the generalized linear model approach revealed nine and eight significant MTAs for FW resistance in the years 2016 and 2017, respectively. Three significant MTAs were obtained for FW resistance following the mixed linear model approach for both years. The SSR markers CESSR433, NCPGR21 and ICCM0284 could be potentially employed for targeted and accelerated improvement of FW resistance in chickpea. To the best of our knowledge, this is the first report on association mapping of the genomic loci controlling FW (Foc2) resistance in chickpea.
- Published
- 2021
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