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Trait-based selection for excess moisture tolerance in chickpea: genetic and physiological insights
Muhammad Naveed1, Muhammad Nadeem2, Urmil Bansal3
1Centre for Carbon, Water and Food, The University of Sydney, Camden, NSW, 2570, Australia; School of Life and Environmental Sciences, The University of Sydney, NSW, 2006, Australia.
Plant Physiology and Biochemistry : PPB
|June 24, 2026
Summary
Excess soil moisture hinders chickpea production. This study identified key physiological and agronomic traits, like NDVI, for breeding chickpea cultivars with improved tolerance to waterlogged conditions.
Area of Science:
- Agricultural Science
- Plant Physiology
- Genetics
Background:
- Excess soil moisture is a significant, understudied challenge for chickpea (Cicer arietinum L.) cultivation.
- Understanding chickpea's response to waterlogged conditions is crucial for improving crop resilience and yield.
Purpose of the Study:
- To investigate the physiological and agronomic basis of chickpea tolerance to excess soil moisture.
- To identify traits and genotypes that confer adaptation to waterlogged environments.
Main Methods:
- Evaluated 191 recombinant inbred lines (RILs) under optimum, suboptimum, and supra-optimum moisture regimes.
- Assessed agronomic, phenological, and physiological traits, including Ascochyta blight severity.
- Utilized variance component analysis, heritability estimates, stress indices, and multivariate approaches.
Main Results:
- High heritability (75-91%) for traits, with significant genotype × environment interactions.
- Excess moisture reduced yield by 44-54% but was partially mitigated by an extended grain-filling period.
- Normalized Difference Vegetation Index (NDVI) and ground cover were stable, while NDVI at podding indicated delayed senescence and correlated positively with yield.
- Ascochyta blight negatively impacted yield, particularly under supra-optimum moisture.
- RIL 1_97 identified as a superior genotype for yield potential and stability.
Conclusions:
- Physiological traits like NDVI and ground cover are valuable indicators for selecting chickpea genotypes tolerant to excess moisture.
- Integrating agronomic, physiological, and disease traits is effective for identifying superior germplasm.
- This research provides a foundation for trait-based breeding strategies to develop chickpea cultivars resilient to waterlogging.
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