Changes of electric potential in pistils of Petunia hybrida Hort. and Brassica napus L. during pollination

摘要: The pattern of electric signals accompanying compatible and incompatible pollination were studied in pistils petunia (Petunia hybrida L.) rape (Brassica napus L). Electric potential was recorded for 4–7 hours with non-polarizable Ag/AgCl electrodes implanted into the ovary beneath sigma. At end measurements, fixed growth pollen tubes analyzed under a fluorescent microscope. Action potentials appeared both species. In dropped by 10 mV few minutes after regardless compatibility cross. this species, during action amplitudes 15–20 up to one hour pollination. They followed long lasting decrease 50 mV. Contrary, self-incompatible pollination, rare lower gradually raised comparison initial level. During first Petunia series reaching 10–20 recorded. time corresponding entrance transmitting tissue style, 40 steady potential. traveled along style velocity 25 mm/s. Incompatible resulted only minor oscillation gradual increase 100 present investigation demonstrated that each phase pollen-stigma recognition events, germination within have its characteristic changes which species specific depended on