Genome-Wide Mapping of Quantitative Trait Loci for Yield-Attributing Traits of Peanut

Joshi, Pushpesh and Soni, P and Sharma, V and Manohar, S S and Kumar, Sampath and Sharma, Shailendra and Pasupuleti, J and Vadez, V and Varshney, R K and Pandey, M K and Puppala, N (2024) Genome-Wide Mapping of Quantitative Trait Loci for Yield-Attributing Traits of Peanut. Genes (TSI), 15. pp. 1-21. ISSN 2073-4425

PDF - Published Version Available under License ["licenses_description_cc_attribution" not defined]. Download (2MB)

Abstract

Peanuts (Arachis hypogaea L.) are important high-protein and oil-containing legume crops adapted to arid to semi-arid regions. The yield and quality of peanuts are complex quantitative traits that show high environmental influence. In this study, a recombinant inbred line population (RIL) (Valencia-C × JUG-03) was developed and phenotyped for nine traits under two environments. A genetic map was constructed using 1323 SNP markers spanning a map distance of 2003.13 cM. Quantitative trait loci (QTL) analysis using this genetic map and phenotyping data identified seventeen QTLs for nine traits. Intriguingly, a total of four QTLs, two each for 100-seed weight (HSW) and shelling percentage (SP), showed major and consistent effects, explaining 10.98% to 14.65% phenotypic variation. The major QTLs for HSW and SP harbored genes associated with seed and pod development such as the seed maturation protein-encoding gene, serine-threonine phosphatase gene, TIR-NBS-LRR gene, protein kinase superfamily gene, bHLH transcription factor-encoding gene, isopentyl transferase gene, ethylene-responsive transcription factor-encoding gene and cytochrome P450 superfamily gene. Additionally, the identification of 76 major epistatic QTLs, with PVE ranging from 11.63% to 72.61%, highlighted their significant role in determining the yield- and quality-related traits. The significant G × E interaction revealed the existence of the major role of the environment in determining the phenotype of yield-attributing traits. Notably, the seed maturation protein-coding gene in the vicinity of major QTLs for HSW can be further investigated to develop a diagnostic marker for HSW in peanut breeding. This study provides understanding of the genetic factor governing peanut traits and valuable insights for future breeding efforts aimed at improving yield and quality.

Item Type:	Article
Divisions:	Global Research Program - Accelerated Crop Improvement
CRP:	UNSPECIFIED
Uncontrolled Keywords:	yield, phenotype, genes, markers, epistatic
Subjects:	Others > Crop Yield Mandate crops > Groundnut Others > Genetics and Genomics
Depositing User:	Mr Nagaraju T
Date Deposited:	24 Jun 2024 05:00
Last Modified:	24 Jun 2024 05:00
URI:	http://oar.icrisat.org/id/eprint/12720
Official URL:
Projects:	UNSPECIFIED
Funders:	National Agricultural Science Fund (NASF) of the Indian Council of Agricultural Research (ICAR), India, Government of India - Department of Biotechnology, New Mexico State University, Agricultural Experiment Station, USA, Department of Agriculture and Co-operation and Farmer Welfare (DAC&FW), Ministry of Agriculture, Government of India, U.S. Department of Agriculture, National Institute of Food and Agriculture, Hatch Capacity funds
Acknowledgement:	Pushpesh Joshi (P.J.) and Vinay Sharma (V.S.) acknowledges Chaudhary Charan Singh University (CCSU), Meerut, for collaborating with ICRISAT and the opportunity given as a student to pursue this investigation at ICRISAT.
Links:	Google Scholar

View Statistics

Actions (login required)

View Item