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Updated: Apr 21, 2026
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Published on: September 23, 2021
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Candidate gene analysis for determinacy in pigeonpea (Cajanus spp.)
Reyazul Rouf Mir1, Himabindu Kudapa, Sandhya Srikanth
1International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502 324, Hyderabad, India.
Summary
Researchers identified CcTFL1 as a key gene for determinacy in pigeonpea (Cajanus cajan). This finding aids in breeding for improved crop traits in this important legume.
Area of Science:
- Plant Genetics
- Crop Improvement
- Legume Research
Background:
- Pigeonpea (Cajanus cajan) is a globally significant legume crop.
- Determinacy is a crucial agronomic trait influencing pigeonpea domestication and breeding.
Purpose of the Study:
- To identify candidate genes responsible for determinacy in pigeonpea.
- To validate the role of candidate genes using genetic and genomic analyses.
Main Methods:
- Comparative genomics to identify candidate genes.
- Single nucleotide polymorphism (SNP) analysis and quantitative trait loci (QTL) analysis.
- Micro-syntenic analysis and gene expression profiling.
Main Results:
- Seven pigeonpea genes related to determinacy were identified.
- CcTFL1 was strongly associated with determinacy, explaining significant phenotypic variation.
- Expression analysis confirmed CcTFL1's role, showing downregulation in determinate lines.
Conclusions:
- CcTFL1 is a likely candidate gene for determinacy in pigeonpea.
- Gene-based markers developed will facilitate future pigeonpea breeding programs.
- Findings support marker development for determinacy in related legume species.
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