Evaluating multiple stability methods to screen bread wheat genotypes (F7 generation) under drought-stressed environments
Armin Saed-Moucheshi, Shahryar Sasani, Farshad Bakhtiar, Davod Roodi, Shokoofeh Sarikhani Khorami
TL;DR
This study evaluates 165 wheat genotypes under drought conditions to identify high-yielding and stable varieties using statistical methods.
Contribution
The study introduces an R-based script for reproducible stability analysis and identifies genotypes with high yield and stability under drought.
Findings
Genotypes G48, G46, and G122 showed consistent high yield and stability across all environments.
CIMMYT-derived lines performed better under drought conditions compared to local genotypes.
AMMI analysis revealed that the first two interaction principal components explained over 83% of the interaction variance.
Abstract
Wheat, as a staple food crop, faces productivity challenges under diverse environmental conditions, particularly in semi-arid regions. Enhancing genotype performance and stability across multiple environments is essential for sustainable wheat production and food security. This study aimed to evaluate the grain yield performance and stability of 165 F7 wheat genotypes, along with four check cultivars, across four agro-ecologically distinct environments: Karaj, Zarghan, Kermanshah, and Nishapur, with the latter representing drought-prone conditions. The genetic materials used were derived from both local germplasm and International Maize and Wheat Improvement Center; “Centro Internacional de Mejoramiento de Maíz y Trigo” (CIMMYT) sources, ensuring a wide genetic base and reflecting the benefits of international collaboration in crop improvement. A combination of univariate and…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
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Taxonomy
TopicsGenetics and Plant Breeding · Climate change impacts on agriculture · Wheat and Barley Genetics and Pathology