TAILIEUCHUNG - QTL mapping and analysis of QTL x Nitrogen interactions for some yield components in Brassica napus L.

Nitrogen (N) plays a critical role in crop production. Nowadays, it is possible to detect quantitative trait loci (QTL), as well as their effects and positions on chromosomes, by new molecular and biometrical methods. | Turk J Agric For 27 (2003) 71-76 © TÜB‹TAK QTL Mapping and Analysis of QTL x Nitrogen Interactions for Some Yield Components in Brassica napus L. M. Kemal GÜL Çanakkale Onsekiz Mart University, Faculty of Agriculture, Department of Field Crops, 17100, Çanakkale - TURKEY Received: Abstract: Nitrogen (N) plays a critical role in crop production. Nowadays, it is possible to detect quantitative trait loci (QTL), as well as their effects and positions on chromosomes, by new molecular and biometrical methods. A doubled haploid rapeseed population of 142 lines from the doubled winter rapeseed cultivars Mansholt’s and Samourai, and a framework map derived from an RFLP map were used for the analysis of QTL and their interactions with N in terms of some yield components obtained from field trials in Brassica napus L. The interactions between traits and N were determined by variance analysis. Two QTL for number of seeds per pod, and four QTL for thousand seed weight were mapped at N0 (0 kg/ha N). Three QTL for pod length, two QTL for number of seeds per pod and three QTL for thousand seed weight were mapped at N1 (240 kg/ha N). All the QTL of N0 and N1 were mapped by analysing QTL x N interactions for all traits. Although it was found that there was no interaction between the mapped QTL and N, the results here can be used to improve the N-use efficiency and seed yield of Brassica napus. Key Words: Brassica napus, QTL (quantitative trait loci) mapping, nitrogen (N), interaction Kolzada (Brassica napus L.) Verimle ‹lgili Baz› Karakterlere Ait QTL Haritalamas› ve QTL ile Azot Aras›ndaki ‹nteraksiyon Analizleri Özet: Azot bitkisel üretimde kullan›lan en önemli çevre faktörlerinden biridir. Günümüzde kantitatif kal›t›m gösteren karakterler ile ilgili genlerin yer ald›¤› lokuslar› (QTL= kantitatif karakter lokuslar›) ve bu segmentlerin kromozom üzerindeki yerleri yeni moleküler ve biyometriksel yöntemlerle saptamak mümkündür. Yap›lan bu çal›flmada, iki farkl› kolza

• Nông nghiệp
• Brassica napus
• Quantitative trait loci mapping
• Crop production
• Biometrical methods
• Framework map
• BMC Plant Biology
• MicroRNA mRNA expression profiles
• Potential role
• Cadmium stress response
• BMC Genomics
• Brassica crops
• Whole genome identification
• Evolutionary analysis
• Expression analysis
• Basic helix–loop–helix
• Cải dầu nhập nội
• Mô hình trồng cải dầu nhập nội
• Hàm lượng các axit béo
• Vùng cao núi đá
• Hàm lượng dầu
• Brassica napus L
• Flower color
• Gene cloning
• Real time quantitative PCR
• Zeaxanthin epoxidase
• Antioxidant enzyme
• Drought stress
• Gene expression
• Physiological traits
• Yield attributes
• Yield of Gobhi sarson
• Influence of sulphur application
• Secondary branches per plant
• Basic helix loop helix
• DNA binding
• Seed germination vigor
• Differentially expressed proteins
• Gel electrophoresis
• Thermo sensitive genic male sterility
• Microscopic observation
• Multiplex PCR analysis
• Statistical models
• Nested association mapping
• Double haploid NAM
• Backcross NAM
• Computer simulations
• Silique traits
• Comparative mapping
• Candidate genes
• Fatty acid composition
• Epistatic interaction
• Regulatory pathway
• Seedling development
• Genome wide association mapping
• Digital gene expression analysis
• Dwarf architecture with down curved leaf mutant
• Single nucleotide polymorphism
• Gene mapping
• Leptosphaeria maculans
• Marker assisted breeding
• Molecular marker
• PGIP like protein
• Receptor like protein
• Quantitative resistance
• Adult plant resistance
• Glycine max
• Acyl lipid biosynthesis
• Transcription factor
• Gene network
• Linkage mapping
• Regional association mapping
• Seed weight
• Silique length
• Fine mapping
• Linkage disequilibrium
• Drought tolerance
• Genome wide association studies
• Specific length amplified fragments
• Oil contents
• Fatty acids
• TAG synthesis
• Cold stress
• Short day
• Cross species functionality
• Bna SRR1 transformed lines
• F Box 1
• Abscisic acid
• Seed germination
• Seedling growth and development
• Seed coat color
• Flavonoid biosynthesis
• Fatty acid