Agronomic and anatomic performance of some soybean genotypes under optimal and water-deficit conditions
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View abstract on PubMed
Summary
This summary is machine-generated.Drought-tolerant soybean line H4L4 shows high yield and water use efficiency under water-deficit conditions. This study identifies H4L4 and PI416937 as valuable genetic resources for breeding programs aiming to improve soybean sustainability.
Area Of Science
- Agricultural Science
- Plant Breeding
- Environmental Stress Physiology
Background
- Drought significantly limits global crop productivity, particularly soybean (Glycine max).
- Water scarcity poses a major challenge to soybean yield stability and sustainable production.
Purpose Of The Study
- To evaluate soybean genotypes for drought tolerance under varying irrigation regimes.
- To identify high-performing and stable soybean lines for water-limited environments.
Main Methods
- Field trials under normal (100% ETc) and deficit (60% ETc) irrigation over two seasons.
- Performance evaluation based on seed yield, crop water use efficiency (WUE), drought susceptibility index (DSI), and GGE biplot analysis.
- Anatomical studies of xylem and stem/leaf integrity.
Main Results
- Genotype H4L4 yielded 92% of its normal irrigation productivity under deficit irrigation, outperforming the tolerant PI416937.
- Deficit irrigation saved significant water (37-38%) while H4L4 achieved the highest WUE.
- H4L4 demonstrated superior yield stability and adaptability, confirmed by DSI and GGE biplot analysis.
Conclusions
- The soybean line H4L4 exhibits exceptional drought tolerance, high yield, and water use efficiency.
- H4L4 and PI416937 are promising genetic resources for developing drought-resilient soybean varieties.
- H4L4 is suitable for cultivation in water-scarce regions, enhancing sustainable soybean production.
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