Common buckwheat (Fagopyrum esculentum Moench) is an economically important crop, exhibiting a unique phenomenon of vivipary, which is usually a trait shown by plants growing in wet, arid and flodded conditions. Vivipary was observed in both ripe and un-ripe (green) seeds on the inflorescence. The expression of this trait in buckwheat is detrimental for the crop yield.Key words: Fagopyrum, buckwheat, vivipary, germinationNavadna ajda (Fagopyrum esculentum Moench) je gospodarsko pomembna poljščina, pri kateri je opazen edinstven pojav živorodnosti (viviparija), ki je običajno lastnost rastlin, ki rastejo na mokrih, suhih in poplavnih območjih. Živorodnost so opazili pri zrelih in nezrelih (zelenih) semenih na socvetju. Izražanje te lastnosti pri ajdi zmanjša uporabno vrednost pridelka. Ključne besede: Fagopyrum, ajda, živorodnost, kalitev