tailieunhanh - Genetic diversity analysis in bread wheat (Triticum aestivum L.em.Thell.) for yield and physiological traits

The present investigation was carried out with 32 diverse genotypes of bread wheat in completely randomized block design with 3 replications at Norman E. Borlaug Crop Research Centre, . Pant University of agriculture & Technology Pantnagar for screening the genetic diversity for yield and physiological traits under normal sown condition. The observations were recorded on 16 agronomic traits and 3 physiological traits. The statistical analysis for genetic divergence was done using Mahalanobis-D 2 statistics and clustering of genotypes was done using Tocher method. On the basis of genetic diversity analysis, it was found that the maximum percent contribution towards genetic divergence was from grain yield and minimum by harvest index and spikelet number per spike. Clustering of genotypes revealed that cluster-II has maximum number of genotypes (13) and clusters IV, V and VI each has single genotype only. The highest intra-cluster distance was exhibited by cluster-III () revealing maximum genetic divergence among its constituents. The highest inter-cluster distance was found between clusters V and VI () and the lowest was between cluster-I and II (). Cluster-I exhibited highest cluster means for most of the agronomic traits like grain weight per spike, biological yield per plant and grain yield per plot while clusters-IV and V revealed highest cluster means for physiological traits like canopy temperature depression and SPAD (chlorophyll content) value. The genotypes bearing the desired values from different clusters can be exploited in future breeding programme for the improving the wheat genotypes for yield and physiological traits. | Genetic diversity analysis in bread wheat (Triticum aestivum .) for yield and physiological traits

• Sinh học
• Bread wheat
• Genetic divergence
• D2 statistics
• Clustering and SPAD
• Yield and physiological traits
• 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
• Genotype × environment interaction
• Nonparametric stability measures
• Bread wheat Triticum aestivum L
• Multi environment trials
• 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 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