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Asian Journal of Plant Sciences

Year: 2007 | Volume: 6 | Issue: 8 | Page No.: 1261-1268
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Authors

Reza Mohammadi

Mohammad Armion

Akbar Shabani

Amir Daryaei

Keywords

Research Article

Identification of Stability and Adaptability in Advanced Durum Genotypes Using AMMI Analysis

Reza Mohammadi, Mohammad Armion, Akbar Shabani and Amir Daryaei
This study was undertaken to determine the yield performance of 15 improved durum wheat genotypes selected from Iran/ICARDA joint project in 12 environments during 2004-06 in Iran. Our results showed that contributions to treatment main-effects were: genotype (2.85%), environment (61.59%) and GE (14.86%). Analysis of the interaction revealed decreasing magnitude of contributions to the GE sum of squares in the order: Interaction Principal Component Axis 1 (IPCA1) = 28.2%, IPCA2 = 25.04%, IPCA3 = 18.98% and IPCA4 = 8.52%. In this study the IPCA scores presented a disproportionate genotype response, which was the major source of variation for crossover GE interaction. GE interaction patterns revealed by AMMI biplot analysis indicated that the durum wheat genotypes are narrowly adapted. No genotype has superior performance in all environments. The genotype Mrb3/Mna-1 was the best at combining yield stability and productivity. The genotypes 12A-Mar8081 and 14A-Mar8081 had the most stability but low yielding. Mna-1/Rfm-7 had the highest yield performance and relative widely adapted to across environments.
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