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QTL analysis for nitrogen use efficiency in wheat (Triticum aestivum L.)

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Title QTL analysis for nitrogen use efficiency in wheat (Triticum aestivum L.)
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Creator Rakhi Singh
Gautam Saripalli
Anuj Kumar
Tinku Gautam
Susheel Kumar Singh
Vijay Gahlaut
Sachin Kumar
Prabina Kumar Meher
Rajendra Prasad Mishra
Vinod Kumar Singh
Pradeep Kumar Sharma
Harindra Singh Balyan
Pushpendra Kumar Gupta
 
Subject wheat
nitrogen use efficiency
nitrogen uptake efficiency
nitrogen utilization efficiency
quantitative trait loci
candidate genes
 
Description Not Available
The genetic architecture of nitrogen use efficiency (NUE) and its two component traits i.e. NUpE (N uptake
efficiency) and NUtE (N utilization efficiency) was studied using a bi-parental RIL mapping population
derived from a cross HUW468 (high NUE)/C306 (low NUE). The mapping population, two parental
genotypes and three check genotypes were evaluated under four different N levels (0, 60, 120, and 180
kg/ha) over three years. A genetic map containing 456 SNP markers (2,571.38 cM length) was used for
QTL analysis. Thirty six main effect QTLs (17 QTLs for NUE, 13 NUpE and 6QTLs for NUtE) distributed on
12 chromosomes (1B, 1D, 2A, 2B, 3A, 4B, 5A, 5B, 5D, 6A, 6D, and 7A) were identified at 2.52 to 9.27 LOD
scores. Individual QTLs explained 6.65–22.89% phenotypic variation. Multi-traits QTLs (Mt-QTLs) and
and epistatic QTLs involving first order epistatic (QTL x QTL) interactions were also discovered.
Candidate genes (CGs, as many as 737) were mined from QTL regions which were mainly involved in
metabolic process, cellular process and catalytic activity, etc; differential expression was observed for 49
genes in roots and 34 CGs in shoots. The CGs encoded important transcription factors, transporters etc.
having a role in NUE. QTLs and CGs reported in this study enriched the available knowledge. Seven QTLs
(including three Mt-QTLs) and QTLs involved in six epistatic interactions were recommended for MAS for
improvement of NUE in wheat.
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Date 2023-06-02T03:38:15Z
2023-06-02T03:38:15Z
2023-01-01
 
Type Research Paper
 
Identifier Singh, R., Saripalli, G., Kumar, A. et al. QTL analysis for nitrogen use efficiency in wheat (Triticum aestivum L.). Euphytica 219, 9 (2023). https://doi.org/10.1007/s10681-022-03134-5
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http://krishi.icar.gov.in/jspui/handle/123456789/77974
 
Language English
 
Relation Not Available;
 
Publisher Springer