Crop-wild sunflower hybridization can mediate weediness throughout growth-stress tolerance trade-offs
- Presotto, Alejandro Daniel
- Hernández, Fernando
- Díaz, Marina
- Fernández Moroni, Ivana
- Pandolfo, Claudio Ezequiel
- Basualdo, Jessica
- Cuppari, Selva Yanet
- Cantamutto, Miguel Ángel
- Poverene, María Mónica
DOIAbstract
Agricultural weeds are plants well-adapted to agricultural environments interfering directly and indirectly with crop production and causing important economic losses worldwide. Crop-wild hybridization is one of the main forces that have ruled weed evolution along with adaptation to agricultural (or benign) environments. Considering the competing demands for resources in any plant, adaptation to agricultural environments might result in an increase in growth but with lower tolerance to stress. In Argentina, most of the non-native H. annuus populations grow on roadsides, ditches, fences, hedgerows (ruderals), but there are also a few cases of H. annuus growing in agricultural field as weeds (agrestals). We asume that weediness of these agres...
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