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Integrated Breeding Approaches for Ascochyta Blight Resistance in Chickpea
Kadir Akan1, Duygu Sari2, Hatice Sari3
1Department of Plant Protection, Faculty of Agriculture, Kırşehir Ahi Evran University, Kırşehir 40200, Türkiye.
International Journal of Molecular Sciences
|August 13, 2026
Summary
Ascochyta blight, a destructive chickpea disease caused by Ascochyta rabiei, leads to significant yield loss. Developing durable resistance through genetic insights and integrated management is crucial for sustainable chickpea production.
Area of Science:
- Plant Pathology
- Agronomy
- Genetics
Background:
- Ascochyta blight (AB), caused by *Ascochyta rabiei*, is a major threat to chickpea (*Cicer arietinum*) production, causing up to 100% yield loss.
- The pathogen's heterothallic mating system contributes to high genetic diversity and frequent resistance breakdown in chickpea cultivars.
Purpose of the Study:
- To review current knowledge on Ascochyta blight biology, epidemiology, and management.
- To highlight recent advancements in molecular diagnostics, host-pathogen interactions, and population dynamics.
- To discuss strategies for developing durable resistance in chickpea.
Main Methods:
- Review of existing literature on Ascochyta blight.
- Discussion of conventional and modern detection methods (e.g., PCR, field diagnostics, high-throughput phenotyping).
- Analysis of genomic tools (QTL mapping, GWAS, genomic selection) for identifying resistance loci.
Main Results:
- Ascochyta blight resistance is genetically complex, often polygenic, with identified quantitative trait loci (QTLs) and some major resistance genes.
- Genomic tools have accelerated the discovery of resistance genes and improved breeding efficiency.
- Wild *Cicer* species represent a valuable resource for novel resistance alleles.
Conclusions:
- Integrated management strategies combining genetic resistance, disease monitoring, and advanced breeding techniques are essential for sustainable Ascochyta blight control.
- Development of durable resistant chickpea cultivars requires continued research into host-pathogen interactions and leveraging diverse genetic resources.
