Spanish onion landraces (Allium cepa L.) as sources of germplasm for breeding calçots: a morphological and molecular survey
| Autor: | Francesc Casañas, Laura Pascual, Joan Simó, Joaquín Cañizares |
|---|---|
| Jazyk: | Spanish; Castilian |
| Rok vydání: | 2014 |
| Předmět: |
0106 biological sciences
Germplasm Heterosis High variability Plant Science Horticulture Biology Breeding 01 natural sciences Onions Genetics Spanish landraces Calçots Selection (genetic algorithm) 2. Zero hunger business.industry food and beverages AFLP-SSR 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification Calçot Biotechnology GENETICA 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Microsatellite Allium Amplified fragment length polymorphism business Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| DOI: | 10.1007/s10681-013-0995-y |
| Popis: | Calçots are the immature floral stems of second-year resprouts of the ‘Blanca Tardana de Lleida’ (BTL) onion landrace, and to date, breeding has used only a few populations. So, we aimed to increase our knowledge of the variability of BTL and to explore its characteristics and genetic dissimilarity with other varieties that might be used in calçot breeding programs. We analyzed the agronomic and morphological traits of four populations of BTL, two synthetic varieties of BTL, 20 prestigious Spanish landraces, and 4 exotic onion landraces. Furthermore, we used three combinations of AFLP primers and seven microsatellites to analyze their genetic background. The Spanish landraces (including BTL) shared a large part of their genetic background, which showed considerable variability (heterozygosity around 0.5). Morphological traits also had high variability, so multiple breeding strategies can be used, ranging from intravarietal selection to crossings between populations to take advantage of the heterosis, both for the bulb and for the calçot improvement. |
| Databáze: | OpenAIRE |
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