TAILIEUCHUNG - Interpreting genotype × environment interaction in bread wheat (Triticum aestivum L.) genotypes using nonparametric measures

The objectives of this study were to compare nonparametric stability measures, and to identify promising high-yield and stable bread wheat (Triticum aestivum L.) genotypes in 7 environments during 2003-2005 in the central Black Sea region of Turkey. | Turk J Agric For 33 (2009) 127-137 © TÜBİTAK doi: Interpreting Genotype × Environment Interaction in Bread Wheat (Triticum aestivum L.) Genotypes Using Nonparametric Measures Zeki MUT1, Nevzat AYDIN2, Hasan Orhan BAYRAMOĞLU2, Hasan ÖZCAN2 1 Ondokuz Mayıs University, Bafra Vocational School, Department of Technical Programs, 55400 Bafra, Samsun - TURKEY 2 Black Sea Agricultural Research Institute, PK. 39, Samsun - TURKEY Received: Abstract: The objectives of this study were to compare nonparametric stability measures, and to identify promising high-yield and stable bread wheat (Triticum aestivum L.) genotypes in 7 environments during 2003-2005 in the central Black Sea region of Turkey. The bread wheat genotypes (20 advanced lines and 5 cultivars) were grown in a randomized complete block design with 4 replications in 7 different environments. Three nonparametric statistical tests of significance for genotype × environment (GE) interaction and 10 nonparametric measures of stability were used to identify stable genotypes in 7 environments. Combined ANOVA and nonparametric tests (Kubinger, Hildebrand, and De Kroon/Van der Laan) of genotype × environment interaction indicated the presence of significant crossover and non-crossover interactions, as well as significant differences between genotypes. In this study high TOP values (proportion of environments in which a genotype ranked in the top third) and low rank-sum values (sum of ranks of mean yield and Shukla’s stability variance) were associated with high mean yield. Nonetheless, results of the other nonparametric tests were negatively correlated with mean yield. In the simultaneous selection for high yield and stability, only the rank-sum and TOP methods were useful in terms of the principal component analysis (PCA) results, and correlation analysis of nonparametric stability statistics and yield. According to these stability parameters (TOP and rank-sum) G7 (VONA//KS75210/TAM101),

• Nông nghiệp
• Bread wheat
• Genotype × environment interaction
• Nonparametric stability measures
• Bread wheat Triticum aestivum L
• Multi environment trials
• Heterosis analysis in F1 hybrids
• F1 hybrids of bread wheat
• Bread wheat (Triticum aestivum L em Thell )
• Bread wheat over environments
• Bread wheat (Triticum aestivum L )
• Germplasm lines of bread wheat
• Yield and quality traits
• Assessing genetic diversity
• Genetic advance
• Genetic advance analysis in bread wheat
• Bread wheat genotypes
• Cultivars grown in randomized block design
• Diversity analysis of genetic
• Genetic diversity
• Quality characteristics of bread wheat
• Allelic variations
• Seed storage protein
• High molecular weight
• International Winter Wheat Improvement Project
• Wheat (Triticum aestivum L)
• Days to heading
• Thousand grain yield
• Bread wheat (Triticum aestivum L ) genotypes
• Yield attributing traits in bread wheat
• Yield attributing traits
• Character associations for yield
• Bread machine
• Bread quality
• Flour quality
• French bread
• Wheat gluten quantity
• Yield performances
• Principal component axes
• Additive main effects
• Multiplicative interactions
• Bread wheat cultivars
• Boron deficiency
• Bread and durum wheat
• Yield attributes
• B efficient cultivars
• Floral traits
• Pollen viability
• Hybrid development in bread wheat
• Male sterile and fertile lines
• Genetic analysis
• Quality traits in bread wheat
• Quality traits
• General combining ability
• Path coefficient analysis
• Direct effect and indirect effects
• Indirect effects
• Bread wheat germplasm
• General and specific combining ability
• Bread wheat (Triticum aestivum L em Thell)
• Specific combining ability analysis
• Late sown condition
• Late sown
• Inbreeding depression analysis for yield
• Associated characters
• Genetic variability
• Quantitative traits
• Rust resistance
• Genetic advance in bread wheat
• Heritability and genetic advance
• Heterosis for grain yield
• Yield components
• Bread wheat (Triticum aestivum L
• Standard heterosis
• Studies on variability
• Qualitative traits
• Combining ability
• Gene effects
• High temperature stress
• Heterosis studies in bread wheat
• High temperature stress environment
• Conducted in randomized block design
• Genetic divergence
• Genetic divergence analysis of agronomic traits
• Contribution of different traits towards diversity
• Randomized block design
• BMC Genomics
• Simple sequence repeat
• Bread wheat speciation
• Genome rearrangement
• Genomic DNA sequence variations
• Mahalanobis D2 statistics
• Triticum aestivum L
• Genetic diversity in bread wheat