Article Dans Une Revue Plant Cell Biotechnology and Molecular Biology Année : 2025

Exploring Grain Trait Diversity and Yield Stability in Bread Wheat through Multi Environment Evaluation and Multivariate Statistical Tools

Résumé

Bread wheat (Triticum aestivum L.) underpins global food security, yet its productivity is challenged by variable sowing environments. To identify stable, high-yielding genotypes with desirable grain morphology, 49 advanced breeding lines were evaluated under early and timely sowing across two years at ICAR-IARI, New Delhi. Digital imaging quantified grain morphometric traits, and yield was recorded across environments. Combined ANOVA revealed significant genotype, environment, and genotype × environment effects for all traits, confirming substantial variability. Correlation analysis showed that grain area, perimeter, breadth, equivalent diameter, and median width were positively associated with yield, while roundness was negatively correlated. Principal component analysis (PCA) explained 69.8% of total variation, with yield clustering with grain size traits. Hierarchical clustering grouped genotypes into three clusters, with Cluster II combining bold grain morphology and superior yield. Trait wise rankings highlighted elite lines such as G12, G6, G25, G28, and G29, while unique contributors like G43, G17, and G40 added diversity for extreme morphology and grain colour. These findings demonstrate the potential of advanced breeding lines as donors for both productivity and quality improvement, offering valuable resources for wheat breeding under climate-challenged production systems.

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Dates et versions

hal-05338017 , version 1 (30-10-2025)

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  • HAL Id : hal-05338017 , version 1

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Meda Alekya, Abhijeet Mudhale, D Sirinandini, Kagita Navya, Poonam Sharma, et al.. Exploring Grain Trait Diversity and Yield Stability in Bread Wheat through Multi Environment Evaluation and Multivariate Statistical Tools. Plant Cell Biotechnology and Molecular Biology, 2025, 26 (9-10), pp.406-418. ⟨hal-05338017⟩
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