Co-location of seed oil content, seed hull content and seed coat color QTL in three different environments in Brassica napus L

• Published in: Euphytica Vol. 170; no. 3; pp. 355 - 364
• Main Authors: Yan, X. Y, Li, J. N, Fu, F. Y, Jin, M. Y, Chen, L, Liu, L. Z
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : Springer Netherlands 01.12.2009; Springer Netherlands; Springer; Springer Nature B.V
• Subjects: agronomic traits; Agronomy; Agronomy. Soil science and plant productions; Biological and medical sciences; Biomarkers; Biomedical and Life Sciences; Biotechnology; Brassica napus; chromosome mapping; color; Cultivars; Fundamental and applied biological sciences. Psychology; Gene mapping; genetic markers; Genetics and breeding of economic plants; hulls; Life Sciences; linkage groups; Molecular biology; Oils & fats; Plant Genetics and Genomics; Plant Pathology; Plant Physiology; Plant Sciences; quantitative trait loci; seed oils; testa; Vegetable oils; Seed oil content; Seed hull content; Seed coat color; L; Quantitative trait loci (QTL); Testa; Tegument; Brassica napus L; Oilseed; Oil content; Color; Quantitative trait loci; Cruciferae; Dicotyledones; Angiospermae; Genetic improvement; Brassica napus; Spermatophyta; Oil plant (vegetal)
• ISSN: 0014-2336; 1573-5060
• DOI: 10.1007/s10681-009-0006-5

Increasing seed oil content is an important breeding goal for Brassica napus L. (B. napus). The identification of quantitative trait loci (QTL) for seed oil content and related traits is important for efficient selection of B. napus cultivars with high seed oil content. To get better knowledge on these traits, a molecular marker linkage map for B. napus was constructed with a recombinant inbred lines (RIL) population. The length of the map was 1,589 cM with 451 markers distributed over 25 linkage groups. QTL for seed oil content, seed hull content and seed coat color in three environments were detected by composite interval mapping (CIM) tests. Eleven QTL accounted for 5.19-13.57% of the variation for seed oil content. Twelve QTL associated with seed hull content were identified with contribution ranging from 5.80 to 22.71% and four QTL for seed coat color accounted for 5.23-15.99% of the variation. It is very interesting to found that co-localization between QTL for the three traits were found on N8. These results indicated the possibility to combine favorable alleles at different QTL to increase seed oil content, as well as to combine information about the relationship between seed oil content and other traits.