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cgSSR marker‐based genome‐wide association study identified genomic regions for panicle characters and yield in rice (Oryza sativa L.)

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Title cgSSR marker‐based genome‐wide association study identified genomic regions for panicle characters and yield in rice (Oryza sativa L.)
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Creator Rameswar Prasad Sah
Amrit Kumar Nayak
Anilkumar Chandrappa
Sasmita Behera
Muhammed Azharudheen TP
G Roopa Lavanya
 
Subject blup
candidate gene simple sequence repeats
gene diversity
genome wide association study
mixed linear model approach
 
Description Not Available
BACKGROUND
To improve production efficiency, positive alleles corresponding to yield-related attributes must be accumulated in a single elite background. We designed and used cgSSR markers, which are superior to random SSR markers in genome-wide association study, to identify genomic regions that contribute to panicle characters and grain yield in this study.

RESULTS
As evidenced by the high polymorphic information content value and gene diversity coefficient, the new cgSSR markers were determined to be highly informative. These cgSSR markers were employed to generate genotype data for an association panel evaluated for four panicle characters and grain yield over three seasons. For five traits, 17 significant marker–trait associations on six chromosomes were discovered. The percentage of phenotypic variance that could be explained ranged from 4% to 13%. Unrelated gene-derived markers had a strong association with target traits as well.

CONCLUSION
Trait-associated cgSSR markers derived from corresponding or related genes ensure their utility in direct allele selection, while other linked markers aid in allele selection indirectly by altering the phenotype of interest. Through a marker-assisted breeding approach, these marker–trait associations can be leveraged to accumulate favourable alleles for yield enhancement in rice. © 2022 Society of Chemical Industry.
ICAR
 
Date 2023-03-06T11:20:01Z
2023-03-06T11:20:01Z
2023-01-30
 
Type Research Paper
 
Identifier Sah, R. P., Nayak, A. K., Chandrappa, A., Behera, S., Azharudheen TP, M., & Lavanya, G. R. (2023). cgSSR marker‐based genome‐wide association study identified genomic regions for panicle characters and yield in rice (Oryza sativa L.). Journal of the Science of Food and Agriculture, 103(2), 720-728.
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http://krishi.icar.gov.in/jspui/handle/123456789/76553
 
Language English
 
Relation Not Available;
 
Publisher Wiley Online Library