0000000000546545
AUTHOR
Gaëlle Gueritaine
Genome discrimination in progeny of interspecific hybrids between Brassica napus and Raphanus raphanistrum
International audience
Variation of prezygotic barriers in the interspecific hybridization between oilseed rape and wild radish
International audience
Aptitude des ravenelles à l'hybridation avec le colza et valeur adaptative des hybrides : implication pour l'utilisation de variétés transgéniques
*Unité de Recherche de Malherbologie et Agronomie 17 rue Sully BP86510 Dijon Cedex Diffusion du document : Unité de Recherche de Malherbologie et Agronomie 17 rue Sully BP86510 Dijon Cedex Diplôme : Dr. d'Université
L'hybridation interspécifique entre le colza transgénique (Brassica napus) et la ravenelle (Raphanus raphanistrum) varie selon les individus
National audience
Polymorphism for interspecific hybridisation within a population of wild radish (Raphanus raphanistrum) pollinated by oilseed rape (Brassica napus)
The within-population polymorphism of wild radish (Raphanus raphanistrum) for interspecific hybridisation with two cultivars of oilseed rape (Brassica napus) was investigated by hand crossing experiments and fluorescence microscopy. Wide variability among plants was observed in the ability of oilseed rape pollen to germinate on the wild radish stigma; the frequency of pistils showing pollen tubes ranged from 0 to 1, depending on the female plant. The ratio of fertilised ovules to the total number of ovules in ovaries where pollen tubes arrived ranged from 0.02 to 0.51. Overall, the results provide evidence for the presence of different phenotypes. In 40% of the plants, pistils had no or ver…