Gene flow between cultivated sunflower and Helianthus petiolaris (Asteraceae)
| Autor: | Alicia Carrera, María Mónica Poverene, Miguel Ángel Cantamutto, Jessica Basualdo, Agustina Gutierrez, Rafael L. Rodríguez |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
biology
Introgression Helianthus petiolaris RADP markers fungi food and beverages Plant Science Horticulture Asteraceae Morphological traits biology.organism_classification medicine.disease_cause Sunflower Gene flow Crop Pollen Botany Helianthus annuus Genetics medicine Agronomy and Crop Science Crop-wild hybridization |
| Zdroj: | Euphytica. 172:67-76 |
| ISSN: | 1573-5060 0014-2336 |
| DOI: | 10.1007/s10681-009-0045-y |
| Popis: | Helianthus petiolaris (Asteraceae) native to North America has naturalized in Argentina. The extensive overlapping with sunflower crop regions, the coincidence of life cycles and the common pollinators facilitate interspecific crosses with sun- flower, H. annuus var. macrocarpus. To estimate the occurrence of crop-to-wild and wild-to-crop gene flow, off-type plants in progenies of pure stands of both species flowering in coincidence and the presence of crop alleles in H. petiolaris populations were investigated in 26 wild populations and nine crop fields. Morphological traits and RAPD markers were used to attempt hybrid characterization. Off-type individuals were found in frequencies of 0.5 and 0.3% among crop progenies and wild populations, respectively. Off-type plants showed intermediate values for metric morphological traits and low fertility traits. Some off-type plants proved to carry crop alleles based on molecular analysis. The average frequency of cultivar-marker introgression across the wild populations was very low (0.02). Although observed hybridization rates seem to be low, the extension of crop-wild overlapping in Argentina make hybrid formation a noticeable process. Therefore, the new sunflower varieties and eventually GM varieties would transfer their traits through pollen flow and they would persist in H. petiolaris populations. Fil: Gutierrez, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: Carrera, Alicia Delia. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Basualdo, Jessica. Universidad Nacional del Sur. Departamento de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rodríguez, R.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina Fil: Cantamutto, Miguel Ángel. Universidad Nacional del Sur. Departamento de Agronomía; Argentina Fil: Poverene, María Mónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina. Universidad Nacional del Sur. Departamento de Agronomía; Argentina |
| Databáze: | OpenAIRE |
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