Identification of seed-related QTL in Brassica rapa
| Autor: | Guusje Bonnema, Mark G. M. Aarts, Joost J. B. Keurentjes, C. J. Hanhart, D. Pino-Del-Carpio, Hedayat Bagheri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Coat
oilseed rape Population F2 mapping population Quantitative trait locus Biology Laboratorium voor Erfelijkheidsleer lcsh:Agriculture turnip rape Laboratorium voor Plantenveredeling Genetic variation Brassica rapa Botany inheritance genetic linkage map yellow seeds education education.field_of_study Genetic diversity Crop yield lcsh:S food and beverages flowering time genetic-linkage map agriculture plant breeding genetics and genetic resources color Horticulture Plant Breeding quantitative trait loci napus oil content Laboratory of Genetics Silique EPS campestris l Agronomy and Crop Science |
| Zdroj: | Spanish Journal of Agricultural Research; Vol. 11 No. 4 (2013); 1085-1093 Spanish Journal of Agricultural Research; Vol. 11 Núm. 4 (2013); 1085-1093 SJAR. Spanish Journal of Agricultural Research instname Spanish Journal of Agricultural Research, Vol 11, Iss 4, Pp 1085-1093 (2013) Spanish Journal of Agricultural Research, 11(4), 1085-1093 Spanish Journal of Agricultural Research 11 (2013) 4 Spanish Journal of Agricultural Research; Vol 11, No 4 (2013); 1085-1093 |
| ISSN: | 1695-971X 2171-9292 |
| Popis: | To reveal the genetic variation, and loci involved, for a range of seed-related traits, a new F2 mapping population was developed by crossing Brassica rapa ssp. parachinensis L58 (CaiXin) with B. rapa ssp. trilocularis R-o-18 (spring oil seed), both rapid flowering and self-compatible. A linkage map was constructed using 97 AFLPs and 21 SSRs, covering a map distance of 757 cM with an average resolution of 6.4 cM, and 13 quantitative trait loci (QTL) were detected for nine traits. A strong seed colour QTL (LOD 26) co-localized with QTL for seed size (LOD 7), seed weight (LOD 4.6), seed oil content (LOD 6.6), number of siliques (LOD 3) and number of seeds per silique (LOD 3). There was only a significant positive correlation between seed colour and seed oil content in the yellow coloured classes. Seed coat colour and seed size were controlled by the maternal plant genotype. Plants with more siliques tended to have more, but smaller, seeds and higher seed oil content. Seed colour and seed oil content appeared to be controlled by two closely linked loci in repulsion phase. Thus, it may not always be advantageous to select for yellow-seededness when breeding for high seed oil content in Brassicas. |
| Databáze: | OpenAIRE |
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