TAILIEUCHUNG - Genetic analysis of grain yield per spike and some agronomic traits in diallel crosses of bread wheat (Triticum aestivum L.)

General reciprocal effects for PH and GYS and the correlations for GYS and yield components were significant in both years. Path analysis indicated that KNS had the highest effect on GYS, followed by TKW. | Turk J Agric For 32 (2008) 249-258 © TÜB‹TAK Genetic Analysis of Grain Yield per Spike and Some Agronomic Traits in Diallel Crosses of Bread Wheat (Triticum aestivum L.) Nazan DA⁄ÜSTÜ Department of Field Crops, Faculty of Agriculture, Uluda¤ University, 16059 Bursa - TURKEY Received: Abstract: To introduce new germplasm into breeding programs in Turkey, 3 lines [Samsun - 46 (S - 46), Samsun/Bafra - 333 (SB - 333), Population - 311 (P - 311)] and 4 cultivars [Marmara - 86 (M - 86), Gönen, Golia, and Pehlivan] of bread wheat (Triticum aestivum L.) were crossed in 7 × 7 diallel crosses. The trials were conducted at Uluda¤ University, Research and Training Center, Turkey, over 3 years (in 2000/01, in 2001/02, and in 2002/03). The 7 parents and 42 crosses were grown in a randomized complete block design with 3 replications for 2 years. The genetic analysis (variance, combining ability, correlations, and path coefficient analysis) of grain yield per spike (GYS) and some agronomic traits [plant height (PH), spike length (SL), spikelet number per spike (SNS), kernel number per spike (KNS), and 1000 kernel weight (TKW)] were evaluated. Differences among parents and hybrids were significant. General combining ability (GCA) effects were highly significant for all the components, while specific combining ability (SCA) effects were significant only for PH, GYS, and TKW. General reciprocal effects for PH and GYS and the correlations for GYS and yield components were significant in both years. Path analysis indicated that KNS had the highest effect on GYS, followed by TKW. The parents Gönen and S - 46 for KNS and P - 311 and SB - 333 for TKW and GYS showed positive GCA values in both years. They could be considered for developing desirable progenies in selection programs. Key Words: Wheat (Triticum aestivum L.), combining ability, correlation and path coefficient analysis Ekmeklik Bu¤day (Triticum aestivum L.) Diallel Melezlerinde Baflakta Tane Verimi ve .

• Nông nghiệp
• Wheat Triticum aestivum L
• Combining ability
• Correlation and path coefficient analysis
• Grain yield per spike
• Kernel number per spike
• Wheat (Triticum aestivum L
• Genetic divesity
• Promising bread wheat
• Grain yield per plot
• Wheat (Triticum aestivum L )
• Elevated temperature
• Micronutrient accumulation in wheat
• Wheat (Triticum aestivum L ) grain
• Drought are major abiotic stress
• 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 wheat (Triticum aestivum L )
• Germplasm lines of bread wheat
• Yield and quality traits
• Assessing genetic diversity
• Nutrient management approach
• Nutrient management approach on wheat
• Maximizing productivity
• Levels of zinc
• Growth and yield
• Loamy sand
• Genetic manipulation
• Drip irrigation
• Triticum aestivum L
• Drip fertigation system
• Response of wheat
• Bread wheat
• Heterosis analysis in F1 hybrids
• F1 hybrids of bread wheat
• Bread wheat (Triticum aestivum L em Thell )
• Bread wheat over environments
• Triticum aestivum
• Productivity of wheat
• Herbicide application
• Nitrogen management on growth
• Marker assisted selection
• Leaf rust
• Resistance genes
• Tilletia indica
• Karnal Bunt
• Tilletia indica inciting karnal bunt
• Characterisation of isolates
• Field resistance of wheat
• Slow rusting
• Related yield
• Wheat growing areas of Turkey
• Crop residue management practices
• Growth and yield of wheat
• Rice wheat system
• Crop residue management
• Boron effect
• Seed yield and seed quality
• Wheat and zinc effect
• Seed quality of wheat
• Micro nutrients on growth
• Productivity and quality of wheat
• Quality of wheat
• Quality of wheat (Triticum aestivum L )
• Different levels
• Potassium and nitrogen fertilization
• Nitrogen fertilization
• Integrated nutrient management
• Yield and economics of wheat
• Economics of wheat
• Inorganic fertilizers
• Crop residue
• Fungal consortium
• NAR and yield
• Mungbean cropping system
• Crop residue and potassium management
• Sowing dates
• Sowing dates on growth
• Moisture regime
• Nutrient management system
• Gene action studies for grain yield
• Yield contributing traits in wheat
• Allelopathic potentiachickpea
• Euphorbia helioscopia
• Germination growth
• Seedling growth
• Molecular diversity
• SSR marker
• Weevil resistance
• Rice weevil (Sitophilus oryzae L )
• Breeding of winter wheat
• Technological systems
• Environment friendly technologies
• Multifunctional agricultural production
• Disease resistance
• Yellow rust
• Polymerase chain reaction
• Genotype × environment interaction
• Nonparametric stability measures
• Bread wheat Triticum aestivum L
• Multi environment trials