tailieunhanh - Agronomic trait assessment and selection for number of capsules in determinate x indeterminate crosses of sesame

Despite the progress, improved determinate (dt/dt) lines of sesame are still low yielding. Further improvement may be achieved by crossing locally adapted indeterminate cultivars with desirable determinates from a broad-based composite population. | Research Article Turk J Agric For 33 (2009) 231-241 © TÜBİTAK doi: Agronomic trait assessment and selection for number of capsules in determinate x indeterminate crosses of sesame M. İlhan ÇAĞIRGAN1,*, Selçuk ÖZERDEN2, M. Onur ÖZBAŞ1 1 Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya - TURKEY 2Directorate of Agricultural Protection and Quarantine, Ministry of Agriculture, Mersin - TURKEY Received: Abstract: Despite the progress, improved determinate (dt/dt) lines of sesame are still low yielding. Further improvement may be achieved by crossing locally adapted indeterminate cultivars with desirable determinates from a broad-based composite population. In order to test this hypothesis, 43 F2 base populations from these kinds of crosses were generated and a distinct variability among populations was observed for seed yield and other traits. A 20% positive selection for number of capsules as the most yield-related component was applied to the pairs of determinate and indeterminate segregating in each population. Although seed yield per plant, number of capsules per plant and number of seeds per capsule were lower in determinates than indeterminates, these gaps were closed in certain crosses sharing certain “dt/dt” parents. Despite the fact that the plants were short, days to flowering (in F2) and days to maturity took longer in determinates. The effect of selection was not apparent in increasing mean of progeny population in F3 for the character under selection but the determinate group had the highest coefficient of variation (CV) as a basis for further genetic gain. It was concluded that composite populations with suitable genetic backgrounds were valuable sources of “dt/dt” segregants; recurrent breeding efforts and the modification of farming systems are all necessary in order to adopt novel characteristics like determinacy. Key words: Composite population, mutant modification, Sesamum indicum L., .

• Nông nghiệp
• Composite population
• Mutant modification
• Sesamum indicum L
• Yield component
• Agronomic performance
• BMC Genetics
• Effective population size
• Linkage disequilibrium
• Consistency of gametic phase
• Population structure
• Recent Trends
• Geopolymer Composite
• Fire Resistance
• Features and Applications
• Natural Sources
• Composite Materials
• BMC Bioinformatics
• Quantitative trait locus
• Composite interval mapping
• Multivariate linear model
• Multivariate traits
• BMC Genomics
• Body size
• Artificial selection
• Population genomics
• Fundamental properties
• Composite likelihood ratio
• Genome Biology
• Population history
• Composite likelihood
• Ancestral recombination graph
• Genealogical branches
• Allele frequency
• Population differentiation
• Composite genetic risk score
• Single nucleotide polymorphisms
• BMC Anesthesiology
• Population PKPD modeling
• Bispectral index
• Auditory evoked potentials
• Anesthetic depth
• behavior compared
• non Internet stocks
• Adaptive Composite Materials
• Bionics Principles
• Abnormal Elasticity
• Moving Interface
• measures suggest
• surprising given
• Asymptotic Expansion
• Homogenisation and Multiscale
• Topology Optimisation
• Composite Structures