Journal article

Publication year: 2006

Pages: 1499-1509

Journal: Genome

Volume number: 49

Issue number: 12

ISSN: 0831-2796

DOI Link: https://doi.org/10.1139/G06-091

Publisher: Canadian Science Publishing

Abstract: 
Quantitative trait loci (QTLs) contributing to yellow seed colour and acid detergent fibre (ADF) were localized and compared in 3 mapping populations developed from 2 crosses (designated 'YE1' and 'YE2') between 2 distinct sources of true-breeding yellow-seeded oilseed rape (Brassica napus) and 2 different black-seeded genotypes. A clear correlation was observed between seed colour and ADF content in both crosses. In all 3 populations, a major QTL, with a large effect on both seed colour and ADF in multiple environments, was detected at the same position on chromosome N18. In YE1, a second minor QTL, with a small effect on seed colour but not on ADF content, was localized on chromosome N1. In YE2, no QTL was observed on N1; however, 2 minor seed-colour loci were localized to N15 and N5. A second major QTL for ADF was localized in YE1 on N13; in YE2, no other QTLs for ADF were detected. Combined QTL and segregation data for seed colour and ADF content in the different populations suggest that a partially dominant B. napus gene for seed colour on N18 contributes to a reduction in fibre content in different yellow-seeded B. napus genotypes. The other QTLs that were identified appear to represent different genes in the 2 yellow-seeded rapeseed sources, which, in each case, affect only fibre content or seed colour, respectively. Potential candidate genes and implications for marker-assisted breeding of oilseed rape with reduced seed dietary fibre content are discussed.

Harvard Citation style: Badani, A., Snowdon, R., Wittkop, B., Lipsa, F., Baetzel, R., Horn, R., et al. (2006) Colocalization of a partially dominant gene for yellow seed colour with a major QTL influencing acid detergent fibre (ADF) content in different crosses of oilseed rape (Brassica napus), Genome, 49(12), pp. 1499-1509. https://doi.org/10.1139/G06-091

APA Citation style: Badani, A., Snowdon, R., Wittkop, B., Lipsa, F., Baetzel, R., Horn, R., De Haro, A., Font, R., Luhs, W., & Friedt, W. (2006). Colocalization of a partially dominant gene for yellow seed colour with a major QTL influencing acid detergent fibre (ADF) content in different crosses of oilseed rape (Brassica napus). Genome. 49(12), 1499-1509. https://doi.org/10.1139/G06-091